FBI Warns of Online Radicalization Fueling Real-World Violence Against Synagogues

The FBI's director, Kash Patel, warned the Senate Judiciary Committee on Tuesday that the most significant domestic threat facing the United States is the potential for online activity and organization to translate into real-world violence, including attacks on synagogues and public officials. Patel described the "cyber landscape" as the primary mechanism for this threat, emphasizing that it involves using the internet, social media, and encrypted apps for radicalization, planning, and coordination of violent acts, rather than necessarily cyberattacks in the traditional sense.

One example cited was a thwarted plot in June to attack a White House event with drones and snipers, where suspects discussed targeting members of Congress allegedly linked to a pro-Israel lobby. Patel highlighted the particular relevance of online threats to houses of worship for the Jewish community, referencing a March incident where a man inspired by Hezbollah attacked Temple Israel in West Bloomfield, Michigan. The FBI determined this act of terror was intended to harm the Jewish community and the synagogue, noting the perpetrator consumed pro-Hezbollah and Iranian content online before the attack and searched for Jewish institutions and events in the Detroit area.

Further instances of online threats escalating to potential violence against synagogues have emerged this year. In March, a Chicago resident was indicted for allegedly posting on X his intent to "shoot up a synagogue." In April, a U.S. soldier stationed at Fort Polk was charged with threatening on Discord to enter a synagogue with an AK-47 and kill Jews. The FBI has previously cautioned that lone actors or small groups radicalized online and targeting "soft targets" like places of worship pose significant challenges for early detection.

In June 2025, the FBI and the Department of Homeland Security issued a joint warning about increased threats to Jewish and Israeli communities in the U.S., cautioning that foreign terrorist organizations might exploit Middle East events to incite violence domestically. Patel stressed the need for enhanced cooperation between the FBI and state and local law enforcement to combat this threat, and following the Michigan attack, the FBI urged houses of worship and schools to engage with law enforcement and participate in active shooter training.