Callahan v. Cty. of Suffolk In the 1

16‐336‐cv
Callahan v. Cty. of Suffolk
In the 1
United States Court of Appeals 2
For the Second Circuit 3
4
5
August Term, 2016 6
No. 16‐336‐cv 7
8
C HRISTOPHER C ALLAHAN, INDIVIDUALLY AND AS A DMINISTRATOR 9
D.B .N. OF THE ESTATE OF K EVIN C ALLAHAN, PATRICIA C ALLAHAN, 10
INDIVIDUALLY , 11
Plaintiffs‐Appellants, 12
13
v. 14
15
POLICE O FFICER THOMAS WILSON, #5675, S ERGEANT S COTT G REENE, 16
#960, 17
Defendants‐Appellees, 18
19
THE COUNTY OF S UFFOLK, D ETECTIVE R IVERA, D ETECTIVE O’H ARA, 20
JOHN D OE , S UFFOLK C OUNTY POLICE O FFICERS #1‐10, R ICHARD R OE , 21
S UFFOLK COUNTY E MPLOYEES #1‐10, POLICE O FFICER R OBERT K IRWAN, 22
#2815, POLICE O FFICER JAMES BOWEN, #1294, D ETECTIVE S ERGEANT 23
THOMAS M. G RONEMAN, D ETECTIVE L IEUTENANT G ERARD PELKOFSKY , 24
Defendants.
25
26
 The Clerk of Court is directed to amend the caption as set forth above.

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2
Appeal from the United States District Court 1
for the Eastern District of New York. 2
No. 12‐cv‐2973 — Leonard D. Wexler, Judge. 3
4
5
A RGUED: FEBRUARY 8, 2017 6
D ECIDED: JULY 12, 2017 7
8
9
Before: PARKER , R AGGI, and D RONEY , Circuit Judges. 10
11
12
Appeal from a judgment of the United States District Court 13
for the Eastern District of New York (Wexler, J.) entered following a 14
jury verdict finding defendant police officer Thomas Wilson did not 15
use excessive force, under 42 U.S.C. § 1983 and the Fourth 16
Amendment, in fatally shooting Kevin Callahan. We conclude that 17
the jury instruction regarding the legal justification for the use of 18
deadly force by a police officer did not comply with our prior 19
decision in Rasanen v. Doe, 723 F.3d 325 (2d Cir. 2013). Accordingly, 20
we VACATE the judgment of the district court and REMAND for a 21
new trial. 22
23
Judge RAGGI concurs in part and dissents in part in a 24
separate opinion. 25
26
27
D ONNA ALDEA (Alexander R. Klein, 28
on the brief), Barket Marion Epstein & 29
Kearon, LLP, Garden City, NY, for 30
Plaintiffs‐Appellants. 31
32

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3
B RIAN C. MITCHELL, Assistant 1
County Attorney, for Dennis M. 2
Brown, Suffolk County Attorney, 3
Hauppauge, NY, for Defendants‐ 4
Appellees. 5
D RONEY , Circuit Judge: 6
On September 20, 2011, Kevin Callahan (“Callahan”) was shot 7
and killed during a confrontation with Thomas Wilson, a police 8
officer employed by Suffolk County, New York. Christopher and 9
Patricia Callahan—the decedent’s brother and mother—filed this 10
suit pursuant to 42 U.S.C. § 1983 against Wilson, other Suffolk 11
County police officers and employees, and Suffolk County, alleging, 12
among other causes of action, that Officer Wilson’s use of deadly 13
force violated the Fourth Amendment prohibition against excessive 14
force. The case proceeded to trial. Following the completion of 15
evidence, the district court declined to give plaintiffs’ proposed jury 16
instruction regarding the use of deadly force by a police officer that 17
tracked the deadly force instruction we endorsed in Rasanen v. Doe, 18

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4
723 F.3d 325 (2d Cir. 2013). The jury returned a verdict in favor of 1
Officer Wilson. 2
We agree with plaintiffs that the district court’s jury charge 3
concerning deadly force was inconsistent with Rasanen, and this 4
error was not harmless. Accordingly, we VACATE the judgment of 5
the district court and REMAND for a new trial. 6
BACKGROUND 7
I. Fatal Shooting of Kevin Callahan 8
In the early afternoon of September 20, 2011, Suffolk County 9
Police Officer Thomas Wilson responded to a radio call from a 10
dispatcher reporting a situation involving a gun at the single‐family 11
home of Patricia Callahan in Selden, New York. The radio 12
transmission indicated that Patricia Callahan—who was not at her 13
home—had been on the phone with her son, Kevin Callahan, 1 who 14
1 At the time, Kevin Callahan was twenty‐six years old.

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5
was at the home in Selden and had told his mother that another 1
person with him had a gun. 2
When Officer Wilson arrived at the Callahan home, two other 3
Suffolk County officers, Dan Furey and Elisa McVeigh, had already 4
arrived in response to the dispatch. Officers Wilson, Furey, and 5
McVeigh approached the front entrance to the home, where the 6
screen door was closed but the front door was open. The officers 7
knocked on the screen door, announced their presence, and entered 8
to investigate; McVeigh searched the upstairs while Furey and 9
Wilson went downstairs. Officer Wilson repeatedly announced the 10
officers’ presence and asked if anybody was in the home or needed 11
help. The officers did not hear any response. 12
Once they reached the bottom of the stairs, Officers Wilson 13
and Furey split up—Wilson went to the left, and Furey went to the 14
right. Officer Wilson testified that he saw a cleaver knife in the den 15
area downstairs, which heightened his concern. Wilson checked one 16

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6
bedroom downstairs and then turned to another bedroom to his 1
right. The door was partially open, and as Officer Wilson began to 2
walk through it, he saw an individual through the partially opened 3
door and called out, “police, I see you, . . . don’t move.” J.A. 270. 4
According to Wilson, the person in the room “start[ed] to square off 5
towards the door” and then forcefully attempted to close the 6
bedroom door on Wilson. J.A. 271. 7
Officer Wilson testified that he had been holding his semi‐ 8
automatic service pistol in his left hand down by his left leg, and 9
when the door partially closed on him, he was pinned in the 10
doorframe such that his hand holding the gun was on the other side 11
of the door. Wilson testified that he then saw “some type of object” 12
on the other side of the door, but his flashlight had been knocked 13
out of his right hand and he had only a limited view, so he did not 14
know what the object was. J.A. 275. He testified that the person on 15
the other side of the door also made a sound like “some type of 16

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7
growl” that was “scar[]y.” J.A. 275. According to Wilson, he feared 1
that he could be shot through the door or that his gun might be used 2
against him, so he tried to free himself. He testified that, while he 3
was trying to pull himself out of the door, he saw “a shadow coming 4
around the door” and “a hand thrusting towards [him] with an 5
object.” J.A. 309. Still unable to get out of the doorway, Officer 6
Wilson fired his weapon while the gun was on the other side of the 7
door. Wilson testified that after the initial gunshots, the door let up, 8
which caused him to fall back. As he fell, he continued to fire, but 9
now through the door. 10
According to Wilson, he then stood up and ran toward Officer 11
Furey, took cover, and reported over the radio: “shots fired, man 12
behind the door, unknown weapon or object.” J.A. 311–12. 13
Emergency services arrived with more police officers. Officers 14
entered the downstairs bedroom and saw a person later identified as 15
Kevin Callahan behind the bedroom door, sitting on his heels with 16

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8
his hands under his chest and his chest on his thighs. The officers 1
asked to see his hands and did not receive a response, at which point 2
they placed him in handcuffs and called medical services for him. 3
Callahan died from his gunshot wounds. 4
Forensic analysis and an autopsy later established that Officer 5
Wilson fired a total of four shots, three of which struck Callahan. 6
Two shots were fired from inside the bedroom, and the other two 7
shots were fired through the door. The first shot fired inside the 8
bedroom resulted in a contact wound to Callahan’s back, and the 9
second shot from inside the bedroom entered Callahan’s back right 10
shoulder and exited from his right abdomen. The shot fired through 11
the door that hit Callahan caused a wound in his front upper 12
abdomen/chest area. No weapon was found in the bedroom where 13
Callahan was located. 14

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9
II. Plaintiffs’ Excessive Force Claim 1
In 2012, Christopher and Patricia Callahan filed suit in the 2
United States District Court for the Eastern District of New York 3
against Suffolk County, Officer Wilson, and other Suffolk County 4
police officers and employees. The complaint asserted several state 5
and federal claims in connection with Kevin Callahan’s death, 6
including excessive force pursuant to 42 U.S.C. § 1983 and the 7
Fourth Amendment to the U.S. Constitution.2 8
9
2 Kevin Callahan’s claim under Section 1983 survived his death for the benefit of
his estate, and is brought by his brother, Christopher, the administrator of his
estate. See Barrett v. United States, 689 F.2d 324, 331 (2d Cir. 1982). Christopher
Callahan and Patricia Callahan were named as plaintiffs for additional claims not
relevant to this appeal.

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10
The excessive force claim proceeded to trial in July 2015.3 The 1
jury returned a verdict in favor of Officer Wilson.4 Plaintiffs moved 2
for judgment as a matter of law or a new trial pursuant to Federal 3
Rules of Civil Procedure 50 and 59, which the district court denied. 4
Judgment entered on January 29, 2016,5 and this appeal followed. 5
6
3 The trial also included an Eighth Amendment claim against Suffolk County
Police Sergeant Scott Greene for deliberate indifference to the medical needs of
Kevin Callahan after the shooting. The district court bifurcated the trial of
plaintiffs’ claims, such that the excessive force and deliberate indifference claims
were tried together in the first phase, after which a second trial would address
Monell liability of Suffolk County and other related claims if necessary. The first
trial also originally included false arrest claims, but plaintiffs voluntarily
dismissed those claims after their case‐in‐chief.
4 The jury also returned a defense verdict on the deliberate indifference claim
against Sergeant Greene, which plaintiffs have not challenged here. Defendants
raised a qualified immunity defense as to both the excessive force and deliberate
indifference claims as part of their oral Rule 50 motion, which the district court
denied in its entirety. Qualified immunity was not otherwise litigated at trial,
and defendants have not raised it on appeal.
5 Although the jury’s verdict addressed plaintiffs’ claims against only Wilson and
Greene, it appears that the district court entered judgment in favor of all
defendants. The record is not entirely clear, but it appears the district court
concluded that the defense verdict in the first phase of the bifurcated trial
necessarily defeated plaintiffs’ remaining claims.

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11
DISCUSSION 1
On appeal, plaintiffs argue that a new trial is necessary 2
because the jury was not properly instructed regarding the legal 3
standards that govern the use of deadly force under these 4
circumstances. We review jury instructions de novo, considering the 5
challenged instruction in light of the charge as a whole. Warren v. 6
Pataki, 823 F.3d 125, 137 (2d Cir. 2016). A jury instruction is 7
erroneous if it “misleads the jury as to the correct legal standard or 8
does not adequately inform the jury on the law.” Velez v. City of 9
N.Y., 730 F.3d 128, 134 (2d Cir. 2013) (internal quotation marks 10
omitted). An erroneous jury instruction requires a new trial unless 11
the error is harmless. Id. We conclude that the use of force 12
instructions here were inconsistent with our prior decision in 13
Rasanen v. Doe, 723 F.3d 325 (2d Cir. 2013), and we cannot say that 14
the error was harmless. 15

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12
I. Instructional Error 1
In Rasanen v. Doe, decided approximately two years before the 2
trial here, we explained that the jury charge in a Section 1983 police 3
shooting case alleging excessive use of force by a police officer in 4
circumstances similar to those here must include a specific 5
instruction regarding the legal justification for the use of deadly 6
force. 723 F.3d at 333, 337. The instruction “must” convey “that the 7
use of force highly likely to have deadly effects is unreasonable 8
unless the officer had probable cause to believe that the suspect 9
posed a significant threat of death or serious physical injury to the 10
officer or to others.” Id. at 334. Failure to so instruct the jury 11
constitutes plain error, as it “deprives the jury of adequate legal 12
guidance to reach a rational decision on [the] case’s fundamental 13
issue.” Id. at 334–35 (alteration and internal quotation marks 14
omitted). 15

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13
Defendants‐Appellees suggest that Rasanen may no longer 1
control in light of the Supreme Court’s decision in Plumhoff v. 2
Rickard, 134 S. Ct. 2012 (2014). In Plumhoff, a dangerous police car 3
chase of a fleeing suspect ended when police officers fired at the 4
vehicle, killing the driver and a passenger. See id. at 2017–18. The 5
Supreme Court concluded that the officers did not violate the Fourth 6
Amendment’s prohibition against the use of excessive force. See id. 7
at 2020–22. Plumhoff did not, however, involve any claim of 8
instructional error, nor does the opinion alter the authorities on 9
which Rasanen relied regarding the appropriate jury charge 10
concerning the fatal shooting of suspects in the circumstances 11
presented here. In particular, Plumhoff involved an application of 12
Scott v. Harris, 550 U.S. 372 (2007), which was decided several years 13
before Plumhoff and was discussed at length in Rasanen, see 723 F.3d 14
at 333–34. 15

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14
Nor does the Supreme Court’s recent decision in County of Los 1
Angeles v. Mendez, 137 S. Ct. 1539 (2017), undermine Rasanen’s 2
holding as to the requirements for a jury charge in the type of 3
excessive force case presented here. In Mendez, the Supreme Court 4
rejected the Ninth Circuit’s “provocation rule” because that rule 5
allowed a prior independent Fourth Amendment violation “to 6
manufacture an excessive force claim where one would not 7
otherwise exist.” Id. at 1546. In explaining its decision, the Court 8
noted that “[t]he operative question in excessive force cases is 9
‘whether the totality of the circumstances justifie[s] a particular sort 10
of search or seizure.’” Id. (quoting Tennessee v. Garner, 471 U.S. 1, 8– 11
9 (1985)). Importantly, Garner articulated the probable cause 12
requirement for police shooting cases upon which this Court relied 13
in Rasanen. See Rasanen, 723 F.3d at 333 (“In Garner, the Supreme 14
Court explained that ‘[w]here the officer has probable cause to 15
believe that the suspect poses a threat of serious physical harm, 16

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15
either to the officer or to others, it is not constitutionally 1
unreasonable to prevent escape by using deadly force.’” (quoting 2
Garner, 471 U.S. at 11)). 3
Thus, as relevant here, we conclude that neither Plumhoff nor 4
Mendez overrules Rasanen, which remains the controlling law of this 5
Circuit. Defendants do not attempt to distinguish Rasanen on the 6
facts, which is unsurprising given the similarity between the 7
circumstances of the shooting in that case and the underlying facts 8
here. Accordingly, we are bound to follow Rasanen in this case.6 See 9
Shipping Corp. of India v. Jaldhi Overseas Pte Ltd., 585 F.3d 58, 67 (2d 10
Cir. 2009) (“[A] panel of our Court is bound by the decisions of prior 11
panels until such time as they are overruled either by an en banc 12
panel of our Court or by the Supreme Court.” (internal quotation 13
marks omitted)). 14
6 We acknowledge that, when faced with the question we previously addressed
in Rasanen, other Circuits have reached different, and sometimes opposite,
conclusions. See Johnson v. City of Phila., 837 F.3d 343, 349 (3d Cir. 2016); Noel v.
Artson, 641 F.3d 580, 587 (4th Cir. 2011); Penley v. Eslinger, 605 F.3d 843, 850 (11th
Cir. 2010); Acosta v. Hill, 504 F.3d 1323, 1324 (9th Cir. 2007).

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16
Applying Rasanen, we conclude that the jury charge regarding 1
deadly force was erroneous. Plaintiffs’ proposed jury instructions 2
included the specific language we endorsed in Rasanen and cited 3
that decision. At the charge conference, plaintiffs’ counsel also 4
orally requested that the jury charge include that language, arguing 5
that “it’s not just a matter of semantics.” 7 J.A. 566. The district court 6
denied plaintiffs’ request, and instead instructed the jury in 7
accordance with the general excessive force instructions that apply 8
in situations involving non‐deadly force, 8 with two modifications: 9
the charge specifically referred to “deadly force” in two places, and 10
it included language about an officer’s probable cause to believe that 11
he or she faces a threat of death or serious injury. The exact 12
language of the district court’s charge was as follows: 13
7 Unlike Rasanen, which considered the excessive force charge under plain‐error
review because no clear objection was made to that portion of the charge, see 723
F.3d at 333, plaintiffs here clearly preserved their objection. See J.A. 565–67.
8 See, e.g., Terranova v. New York, 676 F.3d 305, 307, 309 (2d Cir. 2012); United States
v. Schatzle, 901 F.2d 252, 254–55 (2d Cir. 1990).

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17
A person has the right, under the United States 1
Constitution, to be free from the use of excessive force. 2
3
A police officer is entitled to use reasonable force. A 4
police officer is not entitled to use any force beyond 5
what is necessary to accomplish a lawful purpose. 6
Reasonable force may include the use of deadly force. 7
8
A police officer may use deadly force against a person if 9
a police officer has probable cause to believe that the 10
person poses a significant threat of death or serious 11
physical injury to the officer or others. 12
13
In determining whether the police officer used 14
reasonable force, the actions of the police officer are 15
measured by the test of what a reasonable and prudent 16
police officer would have done under the same 17
circumstances confronting the police officer without 18
regard to the police officer’s underlying subjective 19
intent or motivation. 20
21
That means the evil intentions will not be considered 22
excessive force if the force used was in fact reasonable. 23
24
On the other hand, an officer’s good intentions will not 25
make the use of excessive force constitutional. The 26
reasonableness of a particular use of force must be 27
judged from the perspective of a reasonable officer on 28
the scene rather than with hindsight. 29
30
The nature of reasonableness must allow for the fact 31
that police officers are often forced to make split‐second 32

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18
judgments under circumstances that are tense, 1
uncertain and rapidly evolving about the amount of 2
force that is necessary in a particular situation. 3
4
This reasonableness inquiry is an objective one. The 5
question is whether the defendant police officer’s 6
actions w[ere] objectively reasonable in light of the facts 7
and circumstances confronting the police officer. 8
9
In determining whether the police officer used excessive 10
force, you may consider, one, the need for the 11
application of force; two, the relationship between the 12
need and the amount of force used; three, the threat 13
reasonably perceived by the police officer; and, four, 14
any efforts made to temper the severity of a forceful 15
response. 16
17
J.A. 605–06. 18
Unlike in Rasanen, the charge here did refer to the probable 19
cause necessary for an officer to reasonably use deadly force. But 20
the instruction did not track the language from Rasanen, and we 21
conclude that it is materially different from the language we 22
approved there, even with the reference to “probable cause.” In 23
Rasanen, we held that the jury “must” be instructed that the use of 24
deadly force is “unreasonable unless the officer had probable cause to 25

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19
believe that the suspect posed a significant threat of death or serious 1
physical injury to the officer or to others,” 723 F.3d at 334 (emphasis 2
added); here, the jury was instructed that an officer “may use deadly 3
force . . . if” the officer has the requisite probable cause, J.A. 605 4
(emphases added). 5
Although these two formulations both refer to the probable 6
cause requirement for the use of deadly force, they are not 7
functionally equivalent. In Rasanen, we explicitly distinguished 8
between the permissive “may/if” language and the restrictive 9
“unless/only” language by reference to the New York State Police 10
administrative manual before the jury in that case. See Rasanen, 723 11
F.3d at 335–37. The relevant provision in that manual used nearly 12
identical language to the charge here, stating: “A[n officer] may use 13
deadly physical force against another person when they reasonably 14
believe it to be necessary to defend the [officer] or another person 15
from the use or imminent use of deadly physical force.” Id. at 336 16

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20
(internal quotation marks omitted). In concluding that this 1
formulation did not correctly instruct the jury, we explained that the 2
problem with the “may/if” language is that it “is not framed in 3
exclusive and restrictive terms.” Id. at 337. That formulation was 4
insufficient because it did not convey that an officer’s use of deadly 5
physical force is reasonable, and therefore legally permissible, only 6
in a specific circumstance.9 Id. 7
Thus, the charge given to the jury here—which used the same 8
permissive “may/if” language that we specifically rejected in 9
Rasanen—was deficient. This error in the formulation of the specific 10
deadly force instruction was compounded by the balance of the 11
charge regarding excessive force, which further weakened the 12
9 The dissent understates the prominence of this manual provision in Rasanen by
characterizing it as one piece of evidence among many in the trial record. See
Dissenting Op., post at 5–6. To the contrary, Rasanen explained that the deadly
force provision played a more important role at the trial in that case: the district
court instructed the jury that certain manual provisions, including the deadly
force provision, “apply to the case,” and the jury indicated that it was specifically
considering that provision during its deliberations. 723 F.3d at 336–37 (internal
quotation marks omitted).

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21
probable cause requirement. For example, the jury was also told 1
that an officer “is entitled to use reasonable force,” which “may 2
include the use of deadly force.” J.A. 605. Later in the charge, the 3
district court again instructed the jury according to language that 4
applies to non‐deadly uses of force. 5
These instructions were further “dilute[d],” Rasanen, 723 F.3d 6
at 335, by suggesting that the jury could find that Officer Wilson’s 7
shooting of Callahan complied with constitutional standards for 8
reasons other than the fact that Wilson had probable cause to believe 9
that Callahan posed a significant threat of death or serious injury to 10
Wilson or others. Similar to Rasanen, the entirety of the charge here 11
allowed the jury to conclude that “the shooting seemed necessary” 12
because Wilson “acted reasonably under the circumstances,” even if 13
the jury concluded that Callahan did not pose that type of threat. Id. 14
at 336 (emphasis omitted). Rasanen makes clear, however, that an 15
officer’s use of deadly force in a police shooting case is not, as a 16

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22
matter of law, reasonable unless that officer had probable cause to 1
believe that the individual posed a significant threat of death or 2
serious physical injury to the officer or others. Id. at 334. Thus, the 3
charge here suffers from the same “fatal defect” as the charge in 4
Rasanen—“the jury did not know, because it was not told,” that it 5
could not properly conclude that the shooting was justified unless it 6
found that the probable cause requirement was met. Id. at 336. 7
Even though the jury was told that Officer Wilson would have 8
been permitted to use deadly force if he had probable cause to 9
believe that Callahan posed a significant threat of death or serious 10
injury, our required charge is more demanding; under Rasanen, such 11
probable cause is the only situation in which Wilson was permitted 12
to use deadly force, and the jury must be so instructed. 13
II. Harmlessness Analysis 14
An erroneous jury instruction requires a new trial unless the 15
error was harmless. Uzoukwu v. City of N.Y., 805 F.3d 409, 418 (2d 16

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23
Cir. 2015). “An error is harmless only if the court is convinced that 1
the error did not influence the jury’s verdict.” Id. (internal quotation 2
marks omitted). We are not persuaded that the error in the deadly 3
force charge given here was harmless. 4
The focus of the trial was how the events unfolded in the 5
Callahan basement that afternoon. As discussed above, under the 6
instructions the jury was given, the jury could have reached its 7
verdict without concluding that Officer Wilson had probable cause 8
to believe that Callahan posed a threat of death or serious injury. 9
That conclusion is compelled by the fact that the instructions here 10
allowed the jury to return a defense verdict if it found that Wilson 11
acted according to an overly general standard of “reasonableness” 12
that does not comport with the holding of Rasanen—that deadly 13
force in this context is reasonable only if the requisite probable cause 14
standard is satisfied. On this record, we cannot determine whether 15
the jury answered the critical question and concluded that probable 16

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24
cause existed, or instead decided the case according to a more 1
general standard that is inconsistent with our Circuit’s precedent in 2
this particular type of case. Because this error allowed the jury to 3
decide the case on different grounds than Rasanen permits, we are 4
not convinced that the error did not influence the jury’s verdict, and 5
we therefore cannot say that it was harmless.10 6
10 That the parties referred to probable cause during their summations does not,
as the dissent suggests, render the error here harmless. See Dissenting Op., post
at 7–9. The parties’ various arguments did not cure the instructional error
described above, especially in light of the court’s instructions that the jury was
required to follow the law as articulated by the court, not the lawyers.

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25
III. Evidentiary Rulings 1
Because we have concluded that plaintiffs are entitled to a 2
new trial on the basis of instructional error, we need not consider 3
their remaining arguments. Nevertheless, we briefly address the 4
evidentiary issues raised on appeal in order to provide some 5
guidance in connection with the retrial in this case, as the issues 6
appear likely to recur. See Rentas v. Ruffin, 816 F.3d 214, 223 (2d Cir. 7
2016). 8
Plaintiffs contend that the district court erred by excluding 9
two pieces of evidence at trial: (1) expert testimony about police 10
protocol, and (2) prior incidents in which Officer Wilson fired his 11
weapon. We review a district court’s evidentiary rulings, including 12
those as to expert testimony, for abuse of discretion. Lore v. City of 13
Syracuse, 670 F.3d 127, 155 (2d Cir. 2012). A district court abuses its 14
discretion if it makes “an error of law or a clear error of fact.” 15
Abascal v. Fleckenstein, 820 F.3d 561, 564 (2d Cir. 2016) (internal 16

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26
quotation marks omitted). Upon review of the trial record, we 1
identify no such error in the district court’s decisions. 2
At trial, plaintiffs attempted to introduce expert testimony by 3
former New York City police officer Joseph Zogbi regarding police 4
training and protocol. As explained in his report, Zogbi concluded 5
that Officers Wilson and Furey did not act in accordance with 6
standard police room clearing techniques when they arrived at the 7
Callahan residence, and that the officers had not been properly 8
trained with respect to “basic tactical movement and mindset.” J.A. 9
156. The district court precluded Zogbi from testifying as to 10
plaintiffs’ excessive force claim. 11 11
We conclude that this decision was not an abuse of discretion. 12
As we have explained, a district court has “broad discretion” to 13
carry out its “gatekeeping function” with respect to expert 14
11 Because the trial was bifurcated, the district court ruled that Zogbi would be
permitted to testify in the second phase of the proceedings as to plaintiffs’
municipal liability claims.

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27
testimony, which involves ensuring that the proffered testimony “is 1
relevant to the task at hand.” In re Pfizer Inc. Sec. Litig., 819 F.3d 642, 2
658 (2d Cir. 2016) (internal quotation marks omitted). Here, Zogbi’s 3
expert report focused on whether Officer Wilson’s training was 4
adequate and what a properly trained officer would or would not 5
have done in a similar situation. Contrary to plaintiffs’ arguments, 6
the district court acted within its discretion in concluding that these 7
opinions are not relevant to Wilson’s liability on the excessive force 8
claim, as the type of training that Wilson received does not shed 9
light on the dispositive question here—whether Wilson had 10
probable cause to believe that Callahan posed a significant threat to 11
his safety. Nor are Zogbi’s opinions about police training relevant to 12
Wilson’s credibility in recounting what happened in the Callahan 13
basement that afternoon. 14
Moreover, expert testimony is not admissible under Federal 15
Rule of Evidence 702 if it “usurp[s] . . . the role of the jury in 16

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28
applying th[e] law to the facts before it,” as such testimony 1
“undertakes to tell the jury what result to reach, and thus attempts 2
to substitute the expert’s judgment for the jury’s.” Nimely v. City of 3
N.Y., 414 F.3d 381, 397 (2d Cir. 2005) (first alteration in original) 4
(internal quotation marks omitted). In this case, Zogbi’s suggestions 5
that Officer Wilson did not act reasonably under the circumstances 6
intrude on the jury’s exclusive role as the finder of facts. The district 7
court therefore acted within its discretion in precluding Zogbi from 8
testifying with respect to plaintiffs’ excessive force claim against 9
Officer Wilson. 10
Regarding Officer Wilson’s prior discharges of his weapon, 11
plaintiffs sought to introduce evidence that Wilson had twice fired 12
his pistol at dogs that he perceived to be threatening him while he 13
was on duty. The district court ruled that the evidence was not 14
admissible, and we conclude that this decision was also within the 15
court’s discretion. 16

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29
Plaintiffs point to this Court’s “inclusionary approach” to 1
evidence of prior bad acts under Federal Rule of Evidence 404(b), 2
United States v. Lombardozzi, 491 F.3d 61, 78 (2d Cir. 2007), and argue 3
that the evidence should have been admitted to show Officer 4
Wilson’s mental state when he fired at Callahan and to discredit 5
Wilson’s testimony that he perceived the situation to be dangerous. 6
Even if this evidence was offered for a proper non‐propensity 7
purpose—an issue that we need not and do not reach—the district 8
court was nevertheless entitled to conclude that the prejudicial effect 9
of the evidence substantially outweighed its limited probative value. 10
See United States v. Scott, 677 F.3d 72, 79, 83–85 (2d Cir. 2012). It was 11
therefore not an abuse of discretion for the court to conclude that the 12
evidence was inadmissible. 13
In sum, on the record of this trial, the district court acted 14
within its discretion in excluding Zogbi’s expert testimony and the 15
evidence concerning Officer Wilson’s prior weapons discharges. 16

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30
Although we conclude that there was no abuse of discretion here, 1
we note that any retrial may present different circumstances that 2
lead to different conclusions. 3
CONCLUSION 4
The instructions given to the jury in this case regarding the 5
lawfulness of Officer Wilson’s use of force against Kevin Callahan 6
misstated the law of our Circuit as articulated in Rasanen, 723 F.3d at 7
333–38, and we cannot say that this error was harmless. We 8
therefore VACATE the judgment of the district court and REMAND 9
for a new trial. 10

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R EENA R AGGI, Circuit Judge, concurring in part and dissenting in part:
I concur in so much of the panel decision as concludes that the district
court acted within its discretion in excluding testimony regarding police
protocols and prior instances in which Officer Wilson fired his weapon. See
Majority Op., ante at 25–30. I respectfully dissent, however, from that part of the
decision identifying reversible charging error in reliance on Rasanen v. Doe, 723
F.3d 325 (2d Cir. 2013). See Majority Op., ante at 11–24.
At the outset, I recognize that this panel is bound by Rasanen’s holding that
in a civil action against a police officer for the unconstitutional use of deadly
force, a district court cannot charge a jury that the standard for assessing the
officer’s use of such force is simply “reasonableness.” Rather, the court must
charge that the constitutional use of deadly force requires the officer to have had
probable cause to believe that the person killed posed a significant threat of
death or serious injury to the officer or to others. See Rasanen v. Doe, 723 F.3d at
334, 337; see generally Harper v. Ercole, 648 F.3d 132, 140 (2d Cir. 2011) (stating that
panel is bound by prior decisions of court unless reversed en banc or by Supreme
Court). I, therefore, do not repeat here my reasons for dissenting in Rasanen. See
Rasanen v. Doe, 723 F.3d at 338–46 (Raggi, J., dissenting).

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2
I note only that Rasanen continues to set this court apart from our sister
circuits, which construe the Supreme Court’s decision in Scott v. Harris, 550 U.S.
372 (2007), to “abrogate” the use of any special standards for deciding when the
use of deadly force is constitutionally excessive and to “reinstate[]
‘reasonableness’ as the ultimate—and only—inquiry.”1 Johnson v. City of
Philadelphia, 837 F.3d 343, 349 (3d Cir. 2016); see Acosta v. Hill, 504 F.3d 1323, 1324
(9th Cir. 2007) (“Scott held that there is no special Fourth Amendment standard
for unconstitutional deadly force. Instead, all that matters is whether [police]
actions were reasonable.” (emphasis in original) (internal quotation marks
omitted)); see also Noel v. Artson, 641 F.3d 580, 587 (4th Cir. 2011) (rejecting
argument for special charge on use of deadly force where district court
“submitted the case to the jury under the general rubric of reasonableness”
because “all claims that law enforcement officers have used excessive force . . .
should be analyzed under the Fourth Amendment and its ‘reasonableness’
1 In Scott v. Harris, 550 U.S. 372 (2007), the Supreme Court clarified that Tennessee
v. Garner, 471 U.S. 1, 11 (1985) (holding that where officer “has probable cause to
believe that the suspect poses a threat of serious physical harm, either to the
officer or to others, it is not constitutionally unreasonable to prevent escape by
using deadly force”), “did not establish a magical on/off switch that triggers rigid
preconditions whenever an officer’s actions constitute ‘deadly force[]’”; rather,
“Garner was simply an application of the Fourth Amendment’s ‘reasonableness’
test,” Scott v. Harris, 550 U.S. at 382.

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3
standard” (emphasis in original)); Penley v. Eslinger, 605 F.3d 843, 849–50 (11th
Cir. 2010) (holding that “Fourth Amendment’s ‘objective reasonableness’
standard supplies the test to determine whether the use of force was excessive”).
Moreover, since Rasanen, the Supreme Court has reiterated that the
“settled and exclusive framework” for analyzing claims of excessive force is
“reasonableness.” County of Los Angeles v. Mendez, 137 S. Ct. 1539, 1546 (2017)
(emphasis added) (rejecting Ninth Circuit rule that otherwise reasonable
defensive use of force is unreasonable as a matter of law where officers provoked
violence to which they then responded with deadly force); see Plumhoff v. Rickard,
134 S. Ct. 2012, 2020 (2014) (“A claim that law‐enforcement officers used
excessive [deadly] force to effect a seizure is governed by the Fourth
Amendment’s ‘reasonableness’ standard.”). Insofar as neither Mendez nor
Plumhoff spoke to the issue of how juries should be charged in excessive force
cases, the majority concludes that they do not overrule Rasanen. See Majority
Op., ante at 15. But neither did Tennessee v. Garner, 471 U.S. 1 (1985), or O’Bert ex
rel. O’Bert v. Vargo, 331 F.3d 29 (2d Cir. 2003)—the cases on which Rasanen relied
to identify a probable‐cause charging requirement—speak to jury charges.
Indeed, Garner arose in the context of a bench trial, and the issue in O’Bert was

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4
the denial of summary judgment to a defendant who invoked qualified
immunity to avoid trial. See Rasanen v. Doe, 723 F.3d at 340 (Raggi, J., dissenting).
I do not pursue the matter further, however, because even following
Rasanen’s holding, as this panel must, I would not identify charging error in this
case. The jury instructions on the reasonable use of deadly force in Rasanen
failed to make any mention of a need for probable cause to believe that the
suspect posed a significant threat of death or serious physical injury. See id. at
330–31 (majority opinion). By contrast, the district court here cited such probable
cause as the only example of when an officer might permissibly use deadly force:
A police officer is entitled to use reasonable force. A police officer is not
entitled to use any force beyond what is necessary to accomplish a lawful
purpose. Reasonable force may include the use of deadly force.
A police officer may use deadly force against a person if a police officer has
probable cause to believe that the person poses a significant threat of death or
serious physical injury to the officer or others.
App’x 605 (emphasis added). The majority nevertheless concludes that this
charge is constitutionally inadequate because the jury could have construed
“may,” in the italicized text, as merely illustrative and, therefore, thought that
deadly force might also be “reasonable” in other circumstances where the cited
probable cause was lacking. See Majority Op., ante at 18–22. I cannot agree.

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5
The context in which the probable cause instruction was given indicates
that the word “may” was used to convey legal authorization rather than mere
illustration. See, e.g., Black’s Law Dictionary 1068 (9th ed. 2009) (defining “may”
as “[t]o be permitted to”); Webster’s Third New International Dictionary
(Unabridged) 1396 (1986 ed.) (defining “may” as to “have power,” or “be able”
and to “have permission to”). Thus, when the two quoted paragraphs were
heard together, a reasonable jury would understand that (1) it can sometimes be
“reasonable” for an officer to use deadly force, and (2) when such force may be
used, i.e., when it is constitutionally authorized, is when the officer has “probable
cause to believe that the person poses a significant threat of death or serious
physical injury.” App’x 605. This was sufficient to avoid the prejudicial error
identified in Rasanen, i.e., the district court’s failure in that case “to instruct the
jury with regard to the justifications for the use of deadly force articulated in
O’Bert and Garner.” Rasanen v. Doe, 723 F.3d at 334.
Nor do I think a different conclusion is compelled by Rasanen’s
determination that the instruction’s omission in that case was not rectified by
inclusion in the record of a police manual provision advising officers that they
“may use deadly physical force against another person when they reasonably

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6
believe it to be necessary to defend” themselves or others “from the use or
imminent use of deadly physical force.” Id. at 336 (quoting N.Y. State Police
Admin. Manual § 16B1(A)); see id. at 337 (observing that manual’s language was
not framed in “exclusive and restrictive terms”). As Rasanen itself concluded, a
jury’s opportunity to consider a manual provision that is in evidence is not the
same as receiving an instruction from the court. See id. at 337 (noting that
manual provisions were of little relevance in any event, as they could “not
substitute for an instruction” to the jury).2
More to the point, whatever a jury could have inferred from these manual
provisions in Rasanen, where the district court provided no instructions as to the
probable cause required to use deadly force, a similar concern is not warranted
2 The majority states that the district court in Rasanen told the jury “that certain
manual provisions, including the deadly force provision, ‘apply to the case.’”
Majority Op., ante at 20 n.9 (quoting Rasanen v. Doe, 723 F.3d at 336). I
respectfully submit that the circumstances are more complex than our decision in
Rasanen reports. While the deliberating Rasanen jury sent the district court a note
referencing manual provision § 16B1(A) (Self Defense or Defense of Others) in
evidence, what it asked was whether “certain other provisions” of the manual
applied, id. at 336, specifically, “[§16B1](C), (E), (F), [and] (H),” App’x 1490,
Rasanen v. Doe, 723 F.3d 325 (No. 12‐680‐cv). With no further mention of
§ 16B1(A), the district court told the jury that § 16B1(C) (Prevention of
Termination of Felonies) did not apply to the case, but that subdivisions (E), (F),
and (H), which related to the feasibility of using warnings or alternatives to
deadly force and an officer’s responsibility for the use of force, did apply. See id.
at 1501–04; see also Rasanen v. Doe, 723 F.3d at 336–37.

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7
here. Not only did the district court follow its general reasonableness charge
with the specific instruction that an officer may use deadly force when he has the
probable cause to believe that a person poses a significant threat of death or
serious physical injury to him or others, but also, that was the only justification
for the use of deadly force that was identified for the jury. The district court’s
charge did not suggest, and the parties did not argue, the existence of any other
circumstances in which deadly force might reasonably be used.
Indeed, even if there was charging error in the district court’s failure to
employ “only if” language respecting such probable cause, I would think that
error harmless beyond a reasonable doubt in this case because the parties’
singular focus at trial and on summation was the presence or absence of probable
cause for Officer Wilson to believe that the deceased Callahan posed a significant
threat to the officer’s life at the time he used deadly force.
Plaintiffs’ counsel told the jury that he did not even dispute that Officer
Wilson held a “subjective” fear for his life when he discharged his firearm,
thereby killing Callahan. App’x 573. Counsel argued only that the
circumstances failed—“objectively”—to demonstrate probable cause for that
fear. Id.; see Dancy v. McGinley, 843 F.3d 93, 116 (2d Cir. 2016) (observing that

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8
“Supreme Court [has] made clear” that standard for assessing propriety of
officer’s use of force is “objective reasonableness”). Repeatedly, plaintiffs’
counsel emphasized that Wilson could not lawfully “use deadly physical force,
firing a gun, unless there’s probable cause to believe that his life is at risk,
somebody else is going to use deadly force against him, or that somebody is
going to cause serious physical injury to him or somebody else.” App’x 576; see
id. at 580 (“The law says . . . you’re to rule for the plaintiff, . . . unless there’s
probable cause, reasonably, objectively, probable cause to believe that [the
officer’s] life was in danger or that someone else was in danger, and that’s clearly
not the case here, clearly not the case.”).
The defense, in its summation, neither objected to these statements of the
applicable legal standard nor argued otherwise. To the contrary, defense counsel
embraced the probable cause standard, telling the jury that his summation would
“discuss with you how the evidence has shown that on that day in September
2011, Tom Wilson had probable cause to believe that he was facing a significant
threat of death or serious injury and . . . that it was reasonable and necessary to
use deadly force.” Id. at 584. Counsel then argued how discrete evidence
satisfied that standard. He maintained that (1) the call reporting a dispute

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9
involving “a man with a gun” at Callahan’s home, (2) the officers’ observation of
a cleaver in plain view in the home, and (3) the officers’ failure to receive a
response upon announcing their presence in the home objectively supported
Officer Wilson’s belief of “a real and present threat of danger . . . that there may
be a person there that had a gun.” Id. at 585. Counsel further argued that when
Callahan slammed a bedroom door on Officer Wilson, “pinning him with his
gun inside that room,” the officer “was facing a real fear that the person behind
that door could get his weapon and use it against him or, more significantly, was
armed himself and was going to shoot [the officer] through that door.” Id. at 586.
Thus, he maintained, the officer confronted “a significant threat of death,” id. at
594, that put him “in fear of a real threat of death,” id. at 595. Moreover, in
response to the plaintiffs’ argument that Officer Wilson’s real subjective fear of
risk to his life did not equate to objective probable cause to hold such a fear,
defense counsel argued that “[a]ny other officer would have faced that same
threat and would have had that same reasonable fear.” Id.
It was for the jury to decide how persuasive counsel were in arguing that
the evidence did or did not establish probable cause, but the cited record

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10
convincingly demonstrates that the singular issue in dispute was whether such
probable cause existed.3
That distinguishes this case from Rasanen. There, the jury “did not know,
because it was not told,” to frame the reasonableness of the officer’s actions in
terms of probable cause. Rasanen v. Doe, 723 F.3d at 336. Here, the jury was so
told, both by the court and by counsel. After generally charging the jury that the
use of deadly force could be reasonable, the district court cited a single
circumstance in which such a conclusion would be warranted: when an officer
had probable cause to fear a risk to life or serious physical injury. Meanwhile,
counsel for both parties, in summation, told the jury that the determinative issue
in the case was whether the officer had probable cause to believe that he was
facing a significant threat of death or serious injury. On this record, I identify no
charging error. But even if I were to do so, I would find the error harmless
beyond a reasonable doubt because I think that on the charge given and the
3 As the Supreme Court has instructed, probable cause is a “flexible, common‐
sense standard.” Florida v. Harris, 568 U.S. 237, 240 (2013). While it requires
more than “mere suspicion,” its focus is on “probabilities,” not “hard
certainties.” Walczyk v. Rio, 496 F.3d 139, 156 (2d Cir. 2007) (internal citations and
quotation marks omitted). Thus, it does not demand “proof beyond a reasonable
doubt or by a preponderance of the evidence,” standards that “have no place in a
probable cause determination.” Id. (internal quotation marks and citations
omitted); accord Zalaski v. City of Hartford, 723 F.3d 382, 393 (2d Cir. 2013).

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11
arguments made, the verdict can only have been based on the jury’s finding that,
when Officer Wilson shot Callahan, the officer had probable cause to believe that
Callahan posed a significant threat of death or serious physical injury to the
officer or to others.
Accordingly, I vote to affirm the judgment in favor of defendants.

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