14 F.4th 1213
11th Cir.2021Background
- On June 12, 2016 Omar Mateen, armed with semi‑automatic weapons, killed 49 and wounded 53 at Pulse, an Orlando LGBT nightclub; he pledged allegiance to ISIS during the attack and was later killed by police.
- Plaintiffs (victims’ estates and survivors) sued Facebook, Twitter, and Google (YouTube), alleging the platforms aided and abetted ISIS under the Anti‑Terrorism Act (ATA) by facilitating Mateen’s radicalization via ISIS content; they also pleaded Florida tort claims (wrongful death and negligent infliction of emotional distress).
- The district court dismissed the ATA aiding‑and‑abetting and state‑law claims under Rule 12(b)(6). Plaintiffs appealed only the ATA secondary‑liability and Florida tort dismissals.
- The Eleventh Circuit reviewed the pleadings de novo, accepted factual allegations as true, and focused on whether the Pulse massacre qualifies as an "act of international terrorism" under 18 U.S.C. § 2331(1) and whether ISIS committed/planned/authorized the attack (preconditions for ATA secondary liability).
- The court held the shooting did not "occur primarily outside" the U.S. nor "transcend national boundaries" in means, targets, or locale, and the complaint did not plausibly allege ISIS committed, planned, or authorized the attack; it therefore affirmed dismissal of the ATA claims.
- The court also treated the plaintiffs’ Florida tort arguments as abandoned because they failed to brief proximate‑cause authority and analysis, so it affirmed dismissal of those claims without resolving Florida proximate‑cause law on the merits.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Does the Pulse massacre qualify as "international terrorism" under § 2331(1)(C) (occur primarily outside the U.S. or transcend national boundaries)? | ISIS’s global social‑media campaign radicalized Mateen and ISIS claimed responsibility, so the attack transcends national boundaries. | The attack was planned and executed entirely in Florida by a U.S. resident; the means (firearms), victims, and locale are domestic, so it did not occur primarily outside or transcend national boundaries. | Held: Not "international terrorism"—the attack was domestic and did not plausibly transcend national boundaries. |
| Did ISIS "commit, plan, or authorize" the Pulse attack (predicate for ATA § 2333(d)(2) secondary liability)? | ISIS’s online presence, recruitment, and post‑attack claim of responsibility show it authorized/was involved. | ISIS only claimed responsibility after the fact; no alleged pre‑attack contact or authorization of Mateen. | Held: Plaintiffs failed to plausibly allege ISIS committed, planned, or authorized the attack. |
| Can social‑media companies be liable for aiding and abetting ISIS under the ATA? | Companies knowingly provided substantial assistance by hosting ISIS propaganda and monetizing content, which contributed to Mateen’s radicalization. | Without an underlying "act of international terrorism" committed/planned/authorized by an FTO, secondary liability under the ATA cannot attach. | Held: Aiding‑and‑abetting claims dismissed—essential statutory prerequisites are not met. |
| Did plaintiffs adequately plead proximate cause for Florida wrongful death and negligent infliction claims? | Proximate cause is satisfied for state claims because the same substantial‑factor/foreseeability theory works under Florida law. | Plaintiffs failed to present controlling Florida authority and did not develop proximate‑cause analysis. | Held: Plaintiffs abandoned the Florida‑law challenge by inadequate briefing; dismissal affirmed without resolving open Florida law issues. |
Key Cases Cited
- Crosby v. Twitter, Inc., 921 F.3d 617 (6th Cir. 2018) (earlier appellate resolution of Pulse ATA claims concluding lack of FTO planning/authorization)
- Retana v. Twitter, 1 F.4th 378 (5th Cir. 2021) (similar holding that a lone‑actor, wholly domestic shooting did not "transcend national boundaries")
- Gonzalez v. Google LLC, 2 F.4th 871 (9th Cir. 2021) (analyzing whether facts plausibly allege ISIS committed/planned/authorized mass‑shooting; found insufficient)
- Linde v. Arab Bank PLC, 882 F.3d 314 (2d Cir. 2018) (discussing ATA elements and requirement that all definitional criteria be satisfied for "international terrorism")
- Johnson v. City of Shelby, 574 U.S. 10 (2014) (pleading standard—plaintiff must plausibly allege claims)
- Ruiz v. Tenet Hialeah Healthsystem, Inc., 260 So.3d 977 (Fla. 2018) (Florida articulation of foreseeability/proximate‑cause principles relied on when discussing state tort law)