When Fandom Meets Hate: Antisemitism in the True Crime Community (TCC)
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Antisemitism in the TCC shows up as casual slurs and inside jokes; admiration for antisemitic killers; extremist iconography like swastikas; and as part of how an attacker frames their violence.
From San Diego to Montreal: Antisemitism Serves as a Throughline in Recent Extremist Shootings
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A shooter opened fire in Montreal’s Côte-des-Neiges neighborhood on June 22, resulting in two deaths and one injury before responding law enforcement killed the perpetrator. The perpetrator was identified by law enforcement as a 25-year-old Canadian man; whether or not the shooter selected specific targets is unknown. ADL analysis of a lengthy manifesto reportedly left behind by the shooter reveals a range of extremist views, including antisemitism, incel-linked ideas, and…
Quds Day and Other Iran-Related Protests Nationwide Platform Support for Terror, Conspiratorial Hate
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Since the start of the Feb 2026 military operation against the Iranian regime, protesters have mixed in overtly antisemitic, conspiratorial, and pro-terror messaging with their condemnation of the U.S. and Israel.
Military Operation Against Iranian Regime Fuels Wave of Antisemitic Conspiracy Theories, Calls for Mobilization
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The U.S. and Israeli military operation against the Iranian regime triggered an immediate surge of antisemitic, anti-Zionist and conspiratorial commentary that spanned the ideological spectrum. COE is tracking 7 rhetorical trends.
On 2nd Oct. 7 Anniversary, U.S. Anti-Israel Activists Reaffirm Support for Hamas Attack Amid Ceasefire Talks
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Amid the Gaza ceasefire talks, U.S. anti-Israel activists marked the 2nd anniversary of the October 7 Hamas attack with nationwide disruptive protests and glorification of violence.
Evergreen High School Shooter’s Online Activity Reveals Fascination with Mass Shootings, White Supremacy
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Months before Desmond Holly opened fire at a Colorado high school, he developed a deep fascination with mass shooters. Online, he expressed neo-Nazi views and was active on a violent gore site. Offline, he began to amass tactical gear. The deeply disturbing specifics of this case follow a pattern recently discovered by ADL Center on Extremism, which its analysts have found in at least four school shootings committed by young people over the past year. On September 10, 2025, 16-year-old Holly…
“They Need to Be Taken Out”: Calls for Violence Punctuate Second Annual People’s Conference for Palestine
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The second annual People’s Conference for Palestine highlighted growing extremism within the anti-Israel movement, marked by direct calls for violence and aggressive rhetoric.
Healthcare Workers for Palestine (HCW4P): What You Need to Know
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Healthcare Workers for Palestine (HCW4P) is a U.S.-based network of anti-Zionist healthcare professionals and students who promote extreme anti-Israel beliefs, including calls to abolish Zionism, glorify terror and draw on antisemitic tropes in their messaging.
The Direct Action Movement for Palestinian Liberation (DAMPL): What You Need to Know
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DAMPL is a radical, far-left, anti-Zionist group known for engaging in violent and destructive “direct actions” against institutions and individuals perceived as being connected to Israel.
Antisemitic Threats, Violent Rhetoric Surge on Telegram Amid Israel-Iran Escalation
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Antisemitic threats and violent rhetoric surged by 594% on Telegram following the recent escalation between Israel & the Iranian regime, according to new ADL Center on Extremism research.
Antisemites and extremists of varying ideologies quickly reacted to reports of preemptive Israeli strikes against the Iranian regime with their predictable hate-filled rhetoric.
Purported Videos of Boulder Attacker Surface as Propaganda on Pro-Terror Telegram Channel
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Videos allegedly recorded by the suspect shortly before the Boulder firebombing assault that targeted the Jewish community and injured 12 on Sunday, began circulating as pro-terror propaganda on Telegram one day later
Familiar Attempts to Justify and Downplay Antisemitic Violence Follow Latest Attack on Jewish Community
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Reactions to the latest attack targeting the Jewish community followed a familiar pattern to the murder of a couple leaving a Jewish event in D.C. two weeks ago -- celebration, justification, and legitimization.
Jewish Community Faces Unprecedentedly High Threat Environment
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Since Jan. 2020, the ADL Center on Extremism has documented 22 terrorist plots or attacks targeting Jews, Zionists or Jewish institutions in the U.S. Sixteen of these occurred after October 7, 2023.
Swaths of Anti-Zionist Movement Legitimize Killings at D.C. Jewish Museum
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Many in anti-Zionist circles are celebrating and justifying the murders of two Israeli embassy staffers, and in some cases, even encouraging further violence.
Extremists and Conspiracy Theorists Deny the Capital Jewish Museum Shooting With ‘False Flag’ Narrative
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In the wake of the murder of two people at the Capital Jewish Museum in Washington, D.C., conspiracy theories about the shooting quickly circulated on social media from users across the political spectrum. The most prevalent of these conspiratorial posts alleged that the shooting was a purposeful and coordinated “false flag” attack carried out by the Israeli or U.S. government to make Jews and Israel look sympathetic, tighten relations between the two countries or rationalize going…