Angel Colon v. Twitter, Inc.

USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 1 of 31
[PUBLISH]
IN THE UNITED STATES COURT OF APPEALS
FOR THE ELEVENTH CIRCUIT
________________________
No. 20-11283
________________________
D.C. Docket No. 6:18-cv-00515-CEM-GJK
ANGEL COLON,
NORMAN E. CASIANO-MOJICA,
FRANCHESSKA MERCADO,
JEANETTE MCCOY,
CESAR RODRIGUEZ,
COREY RIVERA,
ROSAMARIA FEBO,
DAVID JOURDENAIS,
EMILY ANN PORTALATIN,
RODNEY SUMTER,
ADRIAN LOPEZ,
JAVIER NAVA,
LEONEL MELENDEZ,
JOAQUIN ROJAS,
KALIESHA ANDINO,
CARLOS MUNIZ,
JUAN J. CUFINO-RODRIGUEZ,
IVAN DOMINGUEZ,
individually and on behalf of the estate of Eric Ivan Ortiz Rivera,
CASSANDRA MARQUEZ,
GEOFFREY RODRIGUEZ,
DONALD BROWN,
individually and on behalf of the estate of Antonio Brown,
JOSE DIAZ,
JAMMY VALENTIN FERNANDEZ,
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 2 of 31
individually and on behalf of the estate of Leroy Valentin Fernandez,
CARLOS J. PEREZ ANGLERO,
DEMETRIUS POLANCO,
MIGUEL VEGA,
CARMEN N. CAPO-QUINONES,
individually and on behalf of the estate of Luis Omar Ocasio-Capo,
CORY RICHARDS,
JONATHAN L. GARCIA,
OLGA MARIA DISLA,
individually and on behalf of the estate of Anthony Luis Laureano Disla,
NATHAN OROZCO,
BETTIE LINDSEY,
NEREDIA RIBOT,
YVENS CARRENARD,
SONIA N. CEDENO,
KADIM RAMOS,
MERCEDES GARCIA,
SANDY ROBERTS,
MERCEDES A. MCQUERY,
JAVIER ANTONETTI,
KEINON CARTER,
MARISSA DELGADO,
MAVELYN MERCED,
JUAN ANTONETTI,
ROLANDO J. RODRIGUEZ,
CHRISTIAN ORIZ-CARDONA,
YORVIS JOSE CAMARGO-ROMERO,
JOSEPH NEGRON,
CHRISTOPHER HANSEN,
NELSON RODRIGUEZ,
ROBERTO TEXIDOR-CARRASQUILLO,
CHRISS MICHAEL WEST,
JACOBI CEBALLO,
MICHAEL GONZALEZ,
MARITZA GOMEZ,
MOHAMMED S. ISLAM,
FRANCISCO G. PABON GARCIA,
BERNICE DEJESUS VALAZQUEZ,
individually and on behalf of the estate of Franky Jimmy DeJesus Valazques,
ISMAIL MEDINA MORALES,
2
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 3 of 31
individually and on behalf of the estate of Angel Candelario Padro,
EDWIN RIVERA ALVAREZ,
JOSE PACHECO,
LIZMARYEE FINOL VILORIA,
Plaintiffs - Appellants,
versus
TWITTER, INC.,
GOOGLE, LLC,
FACEBOOK, INC.,
Defendants - Appellees.
________________________
Appeal from the United States District Court
for the Middle District of Florida
________________________
(September 27, 2021)
Before JORDAN, BRASHER, and JULIE CARNES, Circuit Judges.
JORDAN, Circuit Judge:
In the early morning hours of June 12, 2016, Omar Mateen entered Pulse, an
LGBT nightclub in Orlando, Florida. He was armed with a SIG-Sauer MCX semi-
automatic rifle and a 9mm Glock semi-automatic pistol. Unleashing a hail of
gunfire, he murdered 49 people and injured 53 others. He then barricaded himself
in a bathroom, called 911, and—referring to himself as an “Islamic soldier”—
declared allegiance to The Islamic State of Iraq and Syria (ISIS), a designated
foreign terrorist organization (FTO).
3
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 4 of 31
Following a stand-off, police shot and killed Mr. Mateen. ISIS later claimed
responsibility for the mass shooting, which at the time was the deadliest massacre
in the United States by a single gunman. 1
The estates of the some of the murder victims, along with some of the
injured, filed a lawsuit in federal court in Michigan against several social media
companies—Facebook, Twitter, and Google (YouTube). That action proved
unsuccessful. See Crosby v. Twitter, Inc., 303 F. Supp. 3d 564 (E.D. Mich. 2018),
aff’d, Crosby v. Twitter, 921 F.3d 617 (6th Cir. 2018).
A second action—the present case—was filed in federal court in Florida
against the same social media companies by different victims of the Pulse
shooting. The plaintiffs here alleged in part that the companies aided and abetted
Mr. Mateen in violation of the Anti-Terrorism Act, 18 U.S.C. §§ 2333(a) & (d)(2),
by facilitating his access to radical jihadist and ISIS-sponsored content in the
months and years leading up to the shooting. The plaintiffs also asserted claims
against the companies under Florida law for negligent infliction of emotional
distress and wrongful death. On the companies’ motions, the district court
dismissed the ATA and state-law claims with prejudice under Rule 12(b)(6), and
the plaintiffs appealed.
1
Sadly, the 2017 Las Vegas massacre, in which 60 people were killed, eclipsed the Pulse
shooting a little more than a year later.
4
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 5 of 31
Following oral argument, we affirm. We are deeply saddened by the deaths
and injuries caused by Mr. Mateen’s rampage, but we agree with the district court
that the plaintiffs failed to make out a plausible claim that the Pulse massacre was
an act of “international terrorism” as that term is defined in the ATA. And without
such an act of “international terrorism,” the social media companies—no matter
what we may think of their alleged conduct—cannot be liable for aiding and
abetting under the ATA. As for the state-law claims, the plaintiffs have failed to
adequately brief proximate cause under Florida law, and have therefore abandoned
their challenge to the district court’s ruling.
I
Our review of the district court’s dismissal order is plenary. In conducting
that review we accept the factual allegations in the complaint as true and draw all
reasonable inferences in the plaintiffs’ favor. See Williamson v. Travelport, LP,
953 F.3d 1278, 1284 n.1 (11th Cir. 2020). The question is whether the plaintiffs
have pled facts sufficient to make their claims “substantive[ly] plausibl[e].”
Johnson v. City of Shelby, 574 U.S. 10, 12 (2014).
The plaintiffs have only appealed the dismissal of their ATA aiding and
abetting claims and their Florida-law tort claims, so we confine our discussion
accordingly. In the sections which follow, we set out the legal framework for
5
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 6 of 31
those claims and then address the relevant allegations of the complaint. We begin
with the ATA aiding-and-abetting claim and then turn to the Florida-law claims.
II
The ATA provides that any “national of the United States injured in his or
her person . . . by reason of an act of international terrorism, or his or her estate,
survivors, or heirs, may sue therefor in any appropriate district court of the United
States and shall recover threefold the damages he or she sustains and the cost of the
suit, including attorney’s fees.” 18 U.S.C. § 2333(a). In an action under § 2333(a)
“for an injury arising from an act of international terrorism committed, planned, or
authorized by an organization that had been designated as a foreign terrorist
organization [FTO] under [8 U.S.C. § 2119], . . . liability may be asserted as to any
person who aids and abets, by knowingly providing substantial assistance[.]” §
2333(d)(2). Aiding and abetting liability under the ATA, therefore, requires an act
of “international terrorism” that is “committed, planned, or authorized” by a
foreign terrorist organization (FTO).
The term “international terrorism” has a three-part definition under the ATA.
It “means activities that . . . (A) involve violent acts or acts dangerous to human
life that are a violation of the criminal laws of the United States or of any State, or
that would be a criminal violation if committed within the jurisdiction of the
United States or of any State; (B) appear intended . . . (i) to intimidate or coerce a
6
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 7 of 31
civilian population; (ii) to influence the policy of a government by intimidation or
coercion; or (iii) to affect the conduct of a government by mass destruction,
assassination, or kidnapping; and (C) occur primarily outside the territorial
jurisdiction of the United States, or transcend national boundaries in terms of the
means by which they are accomplished, the persons they appear to be intended to
intimidate or coerce, or the locale in which their perpetrators operate or seek
asylum[.]” § 2331(1)(A)-(C) (emphasis added).
Before turning to the allegations in the plaintiffs’ complaint, we pause to
recognize that the term “international terrorism” can mean different things at
different times to different people. As one journalist put it, “[w]hile most people
can agree that terrorism exists, few can agree on what it is.” Brian Whitaker, “The
Definition of Terrorism,” The Guardian (May 7, 2001). Accord United States v.
Yousef, 327 F.3d 56, 107 n.42 (2d Cir. 2003) (explaining that terrorism can be
defined according to the “perpetrators’ motives, methods, targets, and victims”).
Indeed, Congress has defined the term “international terrorism” differently
throughout the U.S. Code. See, e.g., 22 U.S.C. § 2656f(d)(1); 22 U.S.C.
2708(k)(1); 34 U.S.C. § 20144(j)(1); 50 U.S.C. § 1701 Note (Iran and Libya
Sanctions Act of 1996, Pub. L. 104-172, 110 Stat. 1541, § 14(1)); 50 U.S.C. §
1801(c). In some instances, Congress has linked (or limited) the term to certain
specific acts. See 22 U.S.C. § 262d(a)(2) (hijacking of aircraft). And in others,
7
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 8 of 31
Congress has seemingly left the term undefined. See, e.g., 22 U.S.C. § 2371(delegating to the Secretary of State the responsibility for determining whether
foreign governments have provided support for acts of international terrorism but
leaving the term itself undefined); 42 U.S.C. § 2158(b)(3)(B) (delegating to the
President the authority to determine whether a foreign government has provided
adequate assurance that it will cease support for “acts of international terrorism”
but leaving the term undefined).
Here, because the ATA includes a definition of “international terrorism,”
that definition is the one that matters and our opinion is necessarily limited to the
ATA: “When a statute includes an explicit definition, we must follow that
definition, even if it varies from that term’s ordinary meaning.” Stenberg v.
Carhart, 530 U.S. 914, 942 (2000). See also Western Union Telegraph Co. v.
Lenroot, 323 U.S. 490, 502 (1945) (“statutory definitions of terms . . . prevail over
colloquial meanings”). We affirm the district court’s dismissal of the ATA aiding-
and-abetting claims because the plaintiffs have not sufficiently alleged that the
Pulse massacre “transcended national boundaries” as required by § 2333(1)(C), the
last part of the ATA definition of “international terrorism.”
A
The district court dismissed the ATA aiding and abetting claims against the
social media companies in part because the Pulse massacre was not an act of
8
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 9 of 31
“international terrorism” within the meaning of the ATA. Although the complaint
is long (149 pages) and detailed (730 paragraphs), we focus on the allegations
relevant to this issue as guided by the narrative in the plaintiffs’ brief.
Since 2004, ISIS—which uses violent acts such as summary executions,
mass beheadings, amputations, crucifixions, rapes, and enslavement against
“unbelievers,” “combatants,” or “prisoners of war”—has been a designated FTO
pursuant to 8 U.S.C. § 1189. See D.E. 81 at ¶¶ 350-54. The “stated goal” of ISIS
is to use social media (including the platforms, services, computers, and
communications equipment of the companies named as defendants here) “to assist
in carrying out [its] terrorist attacks throughout the world.” Id. at ¶ 416.
To that end, ISIS reaches potential recruits “by maintaining accounts on
Twitter, Facebook, and YouTube so that individuals across the globe may reach
out to them directly.” Id. at ¶ 227. Without Twitter, Facebook, and YouTube, the
“explosive growth of ISIS over the last few years into the most feared terrorist
group in the world would not have been possible.” Id. at ¶ 13. Using the sites of
these social media companies, ISIS has been able to exert an “outsized impact on
how the world perceives it, by disseminating images of graphic violence (including
the beheading of Western journalists and aid workers) . . . while using social media
to attract new recruits and inspire lone actor attacks.” Id. (internal quotation marks
omitted). According to former FBI Director James Comey, ISIS has “perfected its
9
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 10 of 31
use” of Twitter, Facebook, and YouTube “to inspire small-scale individual attacks,
‘to crowdsource terrorism,’ and to ‘sell murder.’” Id. See also id. at ¶¶ 281-409
(detailing allegations concerning the use of Twitter, Facebook, and YouTube by
ISIS).
Through its use of these sites, ISIS has recruited more than 30,000
foreigners since 2013, including 4,500 Westerners and 250 Americans. See id. at ¶
236. ISIS also solicits and receives donations from these sites. See id. at ¶¶ 238-
39. Twitter, Facebook, and YouTube allow ISIS to post videos—including violent
ones—on their sites and place advertisements on those videos. All of the
companies earn revenue from these advertisements and share the proceeds with
ISIS, which posted the videos on which the advertisements appeared. See id. at ¶¶
242-43, 591-624. A major component of the Pulse attack was the messaging
disseminated by ISIS prior to, during, and after the event, in which ISIS stated its
“reasons for committing the” attack. See id. at ¶ 412.
Mr. Mateen, a private security guard who lived in Ft. Pierce, Florida, found
ISIS content and was radicalized through ISIS’ use of Twitter, Facebook, and
YouTube. See id. at ¶ 676. FBI analysts concluded that he was “self-radicalized
on the Internet over a period of several years and decided recently before the
[Pulse] attack to embrace [ISIS].” Id. at ¶ 426. See also id. at ¶ 469. Before and
10
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 11 of 31
during the Pulse massacre, Mr. Mateen posted messages to Facebook stating that
“in the next few days you will see attacks from [ISIS] in the USA.” Id. at ¶ 459.
Armed with a semi-automatic rifle and a semi-automatic pistol, Mr. Mateen
entered the Pulse nightclub in the early morning hours of June 12, 2016,and
opened fire. After killing and wounding over 100 persons at Pulse, Mr. Mateen
took hostages at the nightclub and barricaded himself. In a call to a 911 operator,
Mr. Mateen pledged allegiance to ISIS and declared himself an “Islamic soldier.”
Id. at ¶¶ 457-58. Following a standoff, police shot and killed Mr. Mateen.
Shortly after the Pulse massacre, ISIS issued a statement describing Mr.
Mateen as an “Islamic State fighter” and “claiming direct responsibility” for the
attack. ISIS’ official news agency and official radio station also stated that Mr.
Mateen was an “Islamic State fighter” and a “soldier of the Caliphate.” Id. at ¶¶
467-68. The news agency “issued a bulletin quoting ‘a source’ confirming that Mr.
Mateen was acting on [ISIS’] behalf.” Id. at 473. Even if Mr. Mateen was never
in contact with ISIS, the organization’s use of social media “directly influenced his
actions on the night of the [Pulse] massacre.” Id. at ¶ 478.
B
The ATA imposes civil liability on “any person who aids and abets, by
knowingly providing substantial assistance, or who conspires with the person who
committed . . . an act of international terrorism,” provided that the “act of
11
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 12 of 31
international terrorism” is “committed, planned, or authorized” by a designated
“foreign terrorist organization.” 18 U.S.C. § 2333(d)(2). The plaintiffs must
therefore plausibly allege that the Pulse massacre was an act of “international
terrorism” (as that term is defined in the ATA) and that it was committed, planned,
or authorized by ISIS. The district court ruled that the Pulse massacre was not an
act of “international terrorism.” It did not reach the question whether the attack
was committed, planned, or authorized by ISIS, but the social media companies
press that argument as an alternative ground for affirmance. See Appellees’ Br. at
22-27.
1
As indicated, the ATA defines “international terrorism” as “activities that . .
. (A) involve violent acts or acts dangerous to human life that are a violation of the
criminal laws of the United States or of any State, or that would be a criminal
violation if committed within the jurisdiction of the United States or of any State;
(B) appear to be intended . . . (i) to intimidate or coerce a civilian population; (ii) to
influence the policy of a government by intimidation or coercion; or (iii) to affect
the conduct of a government by mass destruction, assassination, or kidnapping;
and (C) occur primarily outside the territorial jurisdiction of the United States, or
transcend national boundaries in terms of the means by which they are
accomplished, the persons they appear to be intended to intimidate or coerce, or the
12
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 13 of 31
locale in which their perpetrators operate or seek asylum[.]” § 2331(1)(A)-(C)
(emphasis added).
All of these requirements must be satisfied “for an act to constitute
international terrorism.” Weiss v. Nat’l Westminster Bank PLC, 381 F.Supp.3d
223, 229 (E.D.N.Y. 2019) (citing Linde v. Arab Bank PLC, 882 F.3d 314, 326 (2d
Cir. 2018)). See also Gonzalez v. Google LLC, 2 F.4th 871, 900 (9th Cir. 2021)
(“To qualify as international terrorism, the . . . acts must satisfy each of the criteria
contained in § 2331(1)[.]”). With respect to the third part of the ATA’s
conjunctive definition, i.e. § 2333(1)(C), we agree with the district court that the
plaintiffs’ allegations do not make out a plausible claim of “international
terrorism.” The Pulse nightclub shooting did not “occur primarily outside the
territorial jurisdiction of the United States.” Nor did it “transcend national
boundaries.”
First, the Pulse massacre took place in Orlando, Florida. That is where the
Pulse nightclub was located and where Mr. Mateen—a Florida resident—killed
and wounded scores of innocent persons. Even if we were to assume that ISIS had
some role in the attack, it is not plausible to conclude from the allegations in the
complaint that the massacre was an “activit[y] that “occur[ed] primarily outside the
13
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 14 of 31
territorial jurisdiction of the United States.” See Webster’s Third New Int’l
Dictionary 1800 (2012) (defining “primarily” as “fundamentally, principally”). 2
Second, we are not persuaded by the plaintiffs’ argument that the complaint
plausibly alleges that the Pulse massacre was an “activit[y]” that “transcend[s]
national boundaries in terms of the means by which [it was] accomplished, the
persons [it] appear[s] to be intended to intimidate or coerce, or the locale in which
the perpetrators operate or seek asylum.” The transcending of national boundaries
is not a phrase existing in a statutory vacuum. It is linked to three things, none of
which is plausibly alleged here.
We start with the “means” by which the activity in question was
“accomplished.” The word “means” is “a course of action, or an instrument by
which an act can be accomplished or an end achieved.” The American Heritage
Dictionary of the English Language 1086 (4th ed. 2009). The word “accomplish”
is to “succeed in doing; bring to pass.” Id. at 14. The common understanding of
both words cuts against the plaintiffs’ theory. Mr. Mateen was self-radicalized on
the Internet while living in Florida and came to identify with ISIS. He then used
firearms to commit mass murder and mayhem in that same state. His deadly acts
of domestic terrorism—and the means by which he accomplished them—do not
plausibly transcend national boundaries. See Crosby, 303 F.Supp.3d at 572.
2
Nothing in the complaint alleges (much less plausibly alleges) that ISIS had any contacts with
Mr. Mateen or was aware of his planned attack before it took place.
14
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 15 of 31
The plaintiffs argue that a stated goal of ISIS—a designated FTO—is to use
social media to radicalize individuals to conduct attacks throughout the world,
including in the United States, as part of a campaign of terror, coercion, and
intimidation. Mr. Mateen was radicalized by ISIS through the Internet, and ISIS
claimed responsibility after the fact for the Pulse massacre. Because ISIS’ use of
social media allegedly contributed to the Pulse attack, the plaintiffs allege that the
attack was “an act of international terrorism.” D.E. 81 at ¶ 675. See also id. at ¶
679 (alleging that ISIS uses the social media companies’ platforms from outside
the United States “in a manner that transcends national boundaries”).
These allegations are insufficient to make the “international terrorism” claim
plausible. As the social media companies correctly point out, the Internet was not
the means by which the Pulse massacre was accomplished. See Appellees’ Br. at
21. The allegation that ISIS posts propaganda, videos, and messages on the social
media companies’ platforms—which we accept as true—suggests “nothing more
than that ISIS posts information on the Internet, which might be communicated
over international borders. Nothing in those statements points to any element of
[Mr.] Mateen’s conduct in carrying out the attack that had any transnational
component.” Crosby, 303 F. Supp. 3d at 572-73. The same goes for the
allegations that the companies derive revenue from advertisements posted on ISIS
videos.
15
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 16 of 31
Again, Mr. Mateen was self-radicalized while living in Florida and
committed mass murder there. A case involving a foreign terrorist who is
radicalized overseas, plans his attack there, and then travels to the United States (or
elsewhere) to commit an act of mass destruction may well fit the § 2332(1)(C) bill.
Cf. 18 U.S.C. § 2332b(g)(1) (criminal provision prohibiting certain terrorist acts
transcending national boundaries: “As used in this section . . . the term ‘conduct
transcending national boundaries’ means conduct occurring outside of the United
States in addition to the conduct occurring in the United States.”). But this case,
given the allegations in the complaint, is not close to that hypothetical.
The Pulse shooting likewise did not transcend national boundaries in terms
of the persons it was “intended to intimidate or coerce.” The plausible inference
from the plaintiffs’ allegations is that a mass shooting on United States soil is
meant to terrorize American citizens and residents. To come to the contrary
conclusion we would have to say (or infer) that any act of domestic terrorism,
anywhere in the world, is meant to intimidate or coerce all of humankind. See
Crosby, 303 F. Supp. 3d at 572. And if that were the case, we doubt that Congress
would have included this limiting language in the ATA.
Finally, because Mr. Mateen was the lone shooter in the Pulse massacre, the
complaint does not plausibly allege that his attack transcends national boundaries
in terms of the locales in which the perpetrator “operate[d] or seeks asylum.” Mr.
16
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 17 of 31
Mateen lived in Florida and carried out his murderous spree in that same state, and
there is no indication that he sought asylum anywhere else in the world.
The Fifth Circuit recently came to the same conclusion in an ATA case with
similar facts. In Retana v. Twitter, 1 F.4th 378 (5th Cir. 2021), which involved a
mass shooting in Dallas, Texas, the plaintiffs had alleged that several social media
companies provided material support to Hamas, an FTO, by allowing it to use their
platforms to “contact potential recruits and encourage them to commit terrorist
acts.” Id. at 380. Affirming the dismissal of the plaintiffs’ ATA claims, the Fifth
Circuit held that the Dallas shooting did not “transcend[ ] national boundaries”
because it was “committed by a lone shooter entirely within the United States.” Id.
at 381. Though the shooter in Retana “might have been radicalized in part by
Hamas, . . . Hamas did not plan the shooting or even take credit for it.” Id.
We acknowledge that the allegations in this case get the plaintiffs slightly
closer, as ISIS did take credit afterwards for the Pulse shooting when Mr. Mateen
(whom the plaintiffs admit was self-radicalized) publicly pledged fealty to the
organization. But the reality remains the same: “[ISIS] did not commit the [Pulse]
shooting; [Mr. Mateen] did.” Id. at 382. The Pulse massacre “did not ‘occur
primarily outside’ the United States or ‘transcend national boundaries,’ so it was
not an ‘act of international terrorism.’” Id. (citing § 2331(1)(C)). Moreover, the
“facts as alleged show that ISIS took credit after the attack.” Copeland v. Twitter,
17
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 18 of 31
Inc., 352 F. Supp. 3d 965, 975 (N.D. Cal. 2018). Without any allegations that ISIS
had contact with Mr. Mateen or was aware of the Pulse attack before it took place,
its after-the-fact assertion of responsibility is insufficient to make out a plausible
contention that the massacre transcended national boundaries “in terms of the
means” by which it was “accomplished.” § 2331(1)(C).
2
For aiding and abetting liability to attach under the ATA, the act of
“international terrorism” must have been “committed, planned, or authorized” by a
designated FTO. See § 2333(d)(2). The plaintiffs’ aiding and abetting claim
against the social media companies fails on this element as well.
ISIS, as the plaintiffs point out, is indeed a designated FTO. But we do not
view the complaint as plausibly pleading that ISIS “committed, planned, or
authorized” the Pulse massacre. Each of these verbs generally connotes conscious
actions at the time of or before an act. See American Heritage Dictionary at 121,
371-72, 1341; Webster’s Third New Int’l Dictionary at 145, 457, 1730. Here ISIS
claimed credit after-the-fact, and there is nothing in the complaint to suggest that
ISIS was aware of Mr. Mateen or knew beforehand about his planned attack at
Pulse. Although the complaint alleges that “ISIS reaches potential recruits by
maintaining accounts on Twitter, Facebook, and YouTube so that individuals
across the globe may reach out to [it] directly,” D.E. 81 at ¶ 227, the plaintiffs
18
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 19 of 31
never once claim that Mr. Mateen was in contact with ISIS prior to the shooting, or
that ISIS was involved in committing, planning or authorizing the attack, or that
ISIS knew about the attack beforehand.
We therefore agree with the Sixth Circuit’s resolution of the same issue in
the earlier ATA lawsuit arising from the Pulse massacre:
[Mr.] Mateen by himself and without ISIS’ help planned and
committed the Orlando attack. [He] was “self radicalized” and never
had any contact with ISIS. Nor did ISIS give official permission for
(or ‘authorize’) the attack. Instead ISIS only learned about and
approved of the shooting after the attack. . . . Without more, there are
insufficient facts to [plausibly] allege that ISIS “committed, planned,
or authorized” the Pulse [nightclub] shooting.
Crosby, 921 F.3d at 626. After-the-fact ratification of a previously unauthorized
act may make an organization legally responsible in certain contexts, see generally
Restatement (Third) of Agency § 4.01(1) (2006), but it is not the same as saying
that the organization committed, planned, or authorized the act.
The Ninth Circuit’s recent decision in Gonzalez, 2 F.4th at 879, is also
consistent with Crosby and with our conclusion here. Gonzalez involved three
separate appeals in ATA actions against social media companies for deaths and
injuries caused by terrorist attacks. One of the appeals dealt with ATA aiding and
abetting claims arising from a mass shooting in San Bernardino, California, which
left over a dozen persons dead and many others wounded. There, as here, ISIS
claimed responsibility for the attack after the fact and one of the two shooters
19
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 20 of 31
pledged allegiance to then-ISIS leader Abu Bakr al-Baghdadi at some point during
the attack. Unlike here, the FBI confirmed that the other shooter in the San
Bernardino shooting had face-to-face meetings a few years earlier with five people
identified as having links to terrorism. See id. at 884, 911.
Still, despite a stronger connection between the San Bernardino shooting and
ISIS, the Ninth Circuit held in Gonzalez that “the operative complaint [did] not
plausibly allege that ISIS ‘committed, planned, or authorized’ the San Bernardino
[a]ttack.” Id. at 911. It was undisputed that the two shooters “planned and carried
out the mass killing, [and] the . . . allegations suggest[ed] only that ISIS approved
of the shooting after learning it had occurred, not that it authorized the attack
beforehand.” Id.3
IV
Finally, we turn to the plaintiffs’ Florida-law claims for negligent infliction
of emotional distress and wrongful death. As the district court correctly noted,
both of these torts require a showing of proximate cause. See, e.g., Alderwoods
Grp., Inc. v. Garcia, 119 So.3d 497, 506 (Fla. 3d DCA 2013) (“a cause of action
for emotional distress . . . requires not only actual injury . . . but also a showing of
proximate causation”); Jenkins v. W.L. Roberts, Inc., 851 So.2d 781, 783 (Fla. 1st
3
The Ninth Circuit added that even if “Congress intended ‘authorized’ to include acts ratified by
terrorist organizations after the fact, ISIS’ statement after the San Bernardino [a]ttack f[ell] short
of ratification” because ISIS only praised the shooters and did not adopt their actions as their
own.” Gonzalez, 2 F.4th at 912. Given the allegations here that ISIS claimed responsibility for
the Pulse massacre afterwards, we do not rely on this aspect of Gonzalez.
20
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 21 of 31
DCA 2003) (“To establish a cause of action for negligence in a wrongful death
action, a plaintiff must allege and prove (1) the existence of a legal duty owed to
the decedent, (2) breach of that duty, (3) legal or proximate cause of death was that
breach, and (4) consequential damages.”).
A
Proximate cause is a bedeviling concept in tort law, and a “firm definition
for the term . . . has escaped judges, lawyers, and legal scholars for centuries.”
Kemper v. Deutsche Bank, 911 F.3d 383, 392 (7th Cir. 2018). Not surprisingly,
then, different jurisdictions use varying formulations of proximate cause. See
generally Mark A. Geitsfeld, Proximate Cause Untangled, 80 Md. L. Rev. 420,
429-33 (2021). Even under the ATA, federal courts have set out conflicting
versions of proximate cause for direct liability claims. Compare, e.g., Owens v.
BNP Paribas, S.A., 897 F.3d 266, 273 (D.C. Cir. 2018) (to show proximate cause
under the ATA, a plaintiff must show that the defendant’s acts were a “substantial
factor” in the sequence of events leading to her injuries and that those injuries were
“reasonably foreseeable or anticipated” as a natural consequence of the defendant’s
conduct), with, e.g., Fields v. Twitter, Inc., 881 F.3d 739, 744 (9th Cir. 2018)
(rejecting substantial factor/reasonable foreseeability analysis and holding that
21
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 22 of 31
under the ATA “a plaintiff must show at least some direct relationship between the
injuries that he or she suffered and the defendant’s acts”).4
Under Florida law, a “harm is ‘proximate’ in a legal sense if prudent human
foresight would lead one to expect that similar harm is likely to be substantially
caused by the specific act or omission in question.” Ruiz v. Tenet Hialeah
Healthsystem, Inc., 260 So.3d 977, 982 (Fla. 2018) (citation and internal quotation
marks omitted). “In the absence of a ‘freakish and improbable chain of events’
leading to injury, ‘the question of foreseeability as it relates to proximate causation
generally must be left to the factfinder to resolve.’” Id. (citation omitted). Where
a third party (like Mr. Mateen) has committed an intentional tort or criminal act
causing the plaintiff’s injuries, “[t]he proper question is whether th[at] individual’s
conduct is ‘so unusual, extraordinary, or bizarre (i.e., so unforeseeable) that the
policy of the law will relieve the [defendant] of any liability for negligently
creating [the] dangerous situation.” Goldberg v. Fla. Power & Light Co., 899
So.2d 1105, 1116 (Fla. 2005).
B
Given that their negligent infliction of emotional distress and wrongful death
claims sound in Florida law, one would have expected the plaintiffs to have
4
We have not addressed proximate causation with respect to secondary liability under the ATA
given our conclusion that the Pulse shooting was not an act of international terrorism that was
committed, planned, or authorized by ISIS.
22
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 23 of 31
expounded in their brief on the general principles summarized above. But their
discussion is remarkably silent on Florida law. In the two paragraphs they devote
to their Florida-law claims, the plaintiffs argue only that because they have
established proximate cause under the ATA (using the substantial factor/reasonable
foreseeability standard), they have also satisfied proximate cause under Florida
law. The two Florida cases that the plaintiffs cite stand only for the unremarkable
proposition that their two tort claims require a showing of proximate cause. See
Appellants’ Br. at 40.5
The plaintiffs’ argument is based on a mistaken assumption. Florida does
use the substantial factor/reasonable foreseeability standard for proximate cause,
see Ruiz, 260 So.3d at 982, and some federal courts have employed a similar
standard under the ATA. But that tells us little, for the enunciation of a standard in
the abstract only takes on meaning as that standard is applied in practice.
Proximate cause is a common-law concept in Florida, and the state’s courts have
5
In Crosby, which involved claims against the same social media companies arising out of the
Pulse massacre, the district court and the Sixth Circuit held that the plaintiffs’ claims for
negligent infliction of emotional distress and wrongful death under Michigan law failed because
the complaint did not adequately plead proximate cause. See 330 F.Supp.3d at 580; 921 F.3d at
627. Whether or not the Crosby courts got the Michigan law claims right with respect to
proximate cause, their rulings are certainly relevant to the state-law claims in this case, for the
simple reason that Michigan employs a but-for/reasonable foreseeability standard for proximate
cause that is similar to Florida’s. See Skinner v. Square D Co., 516 N.W.2d 475, 479 (Mich.
1994). The plaintiffs, however, do not discuss this aspect of Crosby in their brief. See also
Copeland, 352 F.Supp.3d at 976 (holding that the plaintiffs, whose relatives and family members
were killed during an ISIS truck attack in Nice, France, failed to sufficiently allege proximate
cause for their tort claims under California law when suing social media companies for allegedly
aiding and abetting ISIS by allowing it to use their platforms to spread extremist propaganda).
23
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 24 of 31
applied it in a number of cases involving intentional criminal acts committed by
third parties. In our view, at least some of those decisions point in different
directions. We use cases involving the unlawful sale of firearms as an example.
In K-Mart Enterprises of Florida, Inc v. Keller, 430 So.2d 283 (Fla. 3d DCA
1983), a retailer sold a rifle to a purchaser in violation of federal law (the purchaser
had been charged with a felony at the time of the sale), and six weeks later the
purchaser lent his brother—an alcoholic and ex-heroin addict—the rifle and a box
of ammunition. The brother shot a police officer during a confrontation, and the
officer sued the retailer for negligence. The jury returned a verdict in favor of the
officer, and the Third District affirmed, holding that it could have found that the
retailer’s unlawful sale of the rifle was a proximate cause of the officer’s injury:
“[W]e conclude that the jury could have properly found the shooting of [the
officer] was the type of harm, or ‘within the risk’ designed to be prevented by the
[federal] Gun Control Act—the misuse of a firearm by a responsible purchaser—so
that [the retailer’s] non-adherence to that statute constituted a legal cause of the
[officer’s] injuries.” Id. at 286.
Several years later, the Second District came to a different conclusion. In
Everett v. Carter, 490 So.2d 193 (Fla. 2d DCA 1986), a firearm retailer knowingly
sold a gun to a 19-year-old teenager (with his adult sister serving as the straw
24
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 25 of 31
purchaser) in violation of federal law. Six weeks later, the teenager used the gun to
kill another person and the victim’s estate sued the retailer for negligence.
The Second District upheld the trial court’s grant of summary judgment in
favor of the retailer on the ground that the unlawful sale was not the proximate
cause of the victim’s death. It explained that under “an anomaly” in Florida law,
persons over the age of 18 could legally possess a gun and ammunition even
though under federal law they could not lawfully purchase those items. See id. at
194-95. As a result, it held that “[the purchaser’s] commission of a criminal act six
weeks after the purchase and delivery of the firearm could not have been
proximately caused by the delivery of the firearm in violation of [federal law]. . . .
[The purchaser’s] criminal act of killing [the victim] was an independent
intervening cause that was not within the realm of reasonable foreseeability on the
part of the [retailer].” Id. at 195 (citation omitted). In closing, the Second District
distinguished the Third District’s decision in Keller on the ground that the 19-year-
old purchaser “was under no legal prohibition under either federal or state law
from possessing or owning the weapon in question.” Id.Then came Coker v. Wal-Mart Stores, Inc., 642 So.2d 774 (Fla. 1st DCA
1994). In that case, a vendor had sold ammunition to minors in violation of federal
law, and the minors then used the bullets (along with a gun) to kill a store clerk
during a robbery. The clerk’s estate sued the vendor for negligence, and the trial
25
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 26 of 31
court dismissed the complaint under the rationale of Carter because Florida law
did not prohibit minors from possessing firearms or ammunition. See id. at 776-
77.
The First District reversed the trial court’s dismissal of the complaint. It
explained that lawful possession was only one of the reasons for the Second
District’s decision in Carter, with the others being the six-week period between the
unlawful sale and the killing and the intentional nature of the killing. See id. at
777. But then, after attempting to distinguish Carter, the First District rejected its
rationale and agreed with the Third District’s decision in Keller: “The argument
that the legality of possession is pivotal to the issue of proximate causation under
these circumstances entirely defeats the congressional purpose of [the federal law]
and renders its provisions a nullity. For the same reason, the proposition that
criminal acts resulting from the unlawful sale of firearms or ammunition should be
treated differently under a proximate causation analysis from negligent acts is
equally unavailing.” Id. at 777-78. The First District concluded with this
language: “[W]e are unwilling to hold as a matter of law in ruling on a motion to
dismiss that an ammunition vendor’s violation of [federal law] cannot be found to
be the proximate cause or injury or death caused by the purchaser’s intentional or
criminal act. Rather, we conclude the complaint sufficiently alleged a causal
relationship between [the victim’s] death and [the vendor’s] negligence in selling
26
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 27 of 31
the ammunition to [the minors] in violation of the statute.” Id. at 778 (citations
omitted).
Looking outside of the context of unlawful firearm sales—which can
constitute negligence per se—Florida law is not much clearer. In Barnes v. Gulf
Power Co., 517 So.2d 717 (Fla. 1st DCA 1987), the First District (which later
decided Coker) addressed a negligence claim against a power company whose
telephone repairmen had been brutally attacked by unknown assailants at a work
site. The repairmen argued that the power company had been negligent in
“maintaining its electrical lines and in misrepresenting that it would send out
repairmen to repair the lines, thereby delaying the telephone repair job until after
darkness fell and proximately causing [their] injuries.” Id. at 718. See also id. at
720 (Ervin, J., concurring) (explaining that the power company had initially
dispatched its repairmen to the wrong location). The First District affirmed the
grant of summary judgment in favor of the power company on the ground that
“there was no causal connection between the alleged negligence . . . and the
[repairmen’s] injuries.” Id. “Assuming [the power company] was negligent as
alleged,” the First District wrote, that negligence “at most[ ] provided the occasion
for the attack and the resulting injuries to the [repairmen]. . . . [U]nder the facts in
this case . . . the attack upon the [repairmen] by the unknown assailants was an
independent efficient intervening cause of the [repairmen’s] injuries.” Id.27
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 28 of 31
Concurring separately in Barnes, Judge Ervin relied on the Restatement
(Second) of Torts. He concluded that “although [an] actor ordinarily would not be
obliged to protect another from the criminal acts of third persons, he may be
required to do so in certain situations because of the nature of the relationship
between him and the injured party, such as special relationships (i.e., carrier and
passenger, landlord and tenant, innkeeper and guest, etc.) or by contract where ‘the
actor has undertaken a duty to protect the other against such misconduct.’” Id. at
723 (quoting Restatement (Second) of Torts § 302B, comment e (1965)).
In addition to Barnes, there are other Florida cases which bear on the
question of proximate cause when a defendant has allegedly caused harm through a
third party’s criminal conduct. These include K.M. ex rel. D.M. v. Publix Super
Markets, Inc., 895 So.2d 1114, 1117 (4th DCA 2005) (“Florida recognizes the
special relationship exception to the general rule of non-liability for third-party
misconduct.”); Fernandez v. Miami Jai Alai, Inc., 386 So.2d 4, 5-6 (Fla. 3d DCA
1980) (“If an intervening criminal act is foreseeable, the original negligence may
be found to be the proximate cause of the damage sustained.”); and Wometco
Theatres Corp. v. Roth, 123 So.2d 472, 473 (Fla. 3d DCA 1960) (“Mere
knowledge that a person may be a child molester is not knowledge that he would
become violent, nor is it sufficient knowledge from which the defendant’s
28
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 29 of 31
employees could have reasonably anticipated violence which would or might result
in injury to another patron.”).
The Restatement (Second) of Torts is not much help with respect to Florida
law on proximate cause in these circumstances. First, the Restatement does not use
the concept of proximate cause and opts for legal cause as the appropriate standard.
See Restatement (Second) of Torts § 431 (“The actor’s negligent conduct is a legal
cause of harm to another if (a) his conduct is a substantial factor in bringing about
the harm, and (b) there is no rule of law relieving the actor from liability because
of the manner in which his negligence has resulted in the harm.”). Second, the
Restatement’s relevant liability provisions—which do allude to foreseeability—
understandably are couched in broad terms and do not appear to provide a clear
answer in this case. See, e.g., § 302B (“An act or omission may be negligent if the
actor realizes or should realize that it involves an unreasonable risk of harm to
another through the conduct of the other or a third person which is intended to
cause harm, even though such conduct is criminal.”) (cited in Barnett v. Dept. of
Financial Services, 303 So.3d 508, 514 (Fla. 2020)); § 442B (“Where the negligent
conduct of the actor creates or increases the risk of a particular harm and is a
substantial factor in causing that harm, the fact that the harm is brought about
through the intervention of another force does not relieve the actor liability, except
where the harm is intentionally caused by a third person and is not within the scope
29
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 30 of 31
of the risk created by the actor’s conduct.”); § 449 (“If the likelihood that a third
person may act in a particular manner is the hazard or one of the hazards which
makes the actor negligent, such an act whether innocent, negligent, intentionally
tortious, or criminal does not prevent the actor from being liable for the harm
caused thereby.”) (cited in Merill Crossings Associates v. McDonald, 705 So.2d
560, 562 (Fla. 1997)).6
We offer these cases and authorities only to illustrate the lack of clarity in
Florida on proximate cause in scenarios similar to ours. There may be other
relevant decisions, as we have not attempted a complete and thorough survey. The
point is that we cannot make sense of Florida law on proximate cause in
circumstances like the ones alleged in the complaint without knowing what the
relevant judicial opinions are and what the parties think about them. We could, of
course, dive headlong into Florida law ourselves and try to figure out the answer.
But that is not how the adversarial process is supposed to work. Having a federal
6
See also Dan H. Dobbs et al., 1 The Law of Torts § 209 (2d ed. 2011 & June 2021 Supp.) (“If
an intervening and unforeseeable intentional harm or criminal act triggers the injury to the
plaintiff, the criminal act is ordinarily called a superseding cause, with the result that the
defendant who negligently creates the opportunity for such acts escapes liability. . . . The
backside of the general rule that insulates the defendant from liability in cases of unforeseeable
intervening criminal acts is that if a criminal or intentional intervening act is foreseeable, or is
part of the original risk negligently caused by the defendant in the first place, then the harm is
not outside the scope of the defendant’s liability—or as most courts still put it, the criminal or
intentional act is not a superseding cause.”).
30
USCA11 Case: 20-11283 Date Filed: 09/27/2021 Page: 31 of 31
court make an educated guess on an open question of state law is serious business,
and it should not be done sua sponte without the parties’ input.
By failing to bring the critical Florida cases (and other relevant authorities)
to our attention, and by failing to address them, the plaintiffs have effectively
abandoned their contention that the district court mistakenly dismissed their
Florida tort claims for failure to sufficiently plead proximate cause. Cf. Access
Now, Inc. v. Southwest Airlines Co., 385 F.3d 1324, 1330 (11th Cir. 2004) (“If an
argument is not fully briefed [on appeal], evaluating its merits would be improper
both because appellants may control the issues the raise on appeal and because the
appellee[s] would have no opportunity to respond to it.”). We therefore leave for
another day whether the sort of facts alleged in the complaint can plausibly make
out the proximate cause element of a tort claim based on negligence under Florida
law.
V
We affirm the district court’s dismissal of the plaintiff’s claims for aiding
and abetting under the ATA and for negligent infliction of emotional distress and
wrongful death under Florida law.
AFFIRMED.
31