The American Jewish community is facing an “elevated threat” following a surge of violent antisemitic attacks across the country in recent weeks, the FBI and Department of Homeland Security warned last week. 

In a joint statement, the FBI and DHS called for increased vigilance among Jewish communities, noting the possibility of copycat attacks after a shooting in Washington in which two Israeli Embassy employees were killed and an attack in Boulder, Colo., in which 15 people were injured in a firebombing targeting advocates calling for the release of hostages in Gaza. “The ongoing Israel-HAMAS conflict may motivate other violent extremists and hate crime perpetrators with similar grievances to conduct violence against Jewish and Israeli communities and their supporters. Foreign terrorist organizations also may try to exploit narratives related to the conflict to inspire attacks in the United States,” the agencies warned. 

Jewish organizations that track threats to the community are similarly concerned about online rhetoric following the attacks. 

The Anti-Defamation League highlighted that, one day after the incident in Boulder, videos allegedly recorded by the assailant shortly before the assault began circulated on a Telegram channel called Taufan al-Ummah, which translates to “Flood of the Ummah,” a reference to the Al-Aqsa Flood, Hamas’ name for its Oct. 7, 2023, terror attack on Israel. The circulated posts celebrated Soliman’s actions. 

The ADL also noted that extremists responded to the attack by spreading conspiracy theories which blamed Jews for the firebombing. Additionally, the Bronx Anti-War Coalition posted a threat shortly after the attack: “May all Zionists live in perpetual fear and paranoia until the day the criminal entity crumbles.” 

“The volume of alerts when our social media web scraping tools highlight postings that may be real threats is happening at a much higher run rate than before D.C. and Boulder,” Mitch Silber, director of the Community Security Initiative, which coordinates security for Jewish communities in the New York region, told Jewish Insider.

“I would say it’s unprecedented,” Silber said of the threat Jews are confronting.  

Silber also called it “unprecedented that American Jews are being targeted because of Israel’s actions,” referring to the Boulder attack, the killing of the two Israeli Embassy staffers, and an attempted arson attack on the home of Pennsylvania Gov. Josh Shapiro during the holiday of Passover. The suspect in the Boulder attack told investigators he “wanted to kill all Zionist people” and had planned the attack for a year. The shooter in Washington yelled “Free Palestine” shortly after the attack and the arsonist cited Shapiro’s support for Israel as his motive.   

These attacks, according to Silber, are distinct from other antisemitic incidents that have occurred in recent years, such as the 2018 Tree of Life synagogue shooting in Pittsburgh — which remains the deadliest attack on Jews on U.S. soil — and the 2022 hostage-taking at Congregation Beth Israel in Colleyville, Texas. 

“The key element that’s different here is the motivation of the attacks,” Silber said. The Tree of Life shooter was motivated by HIAS immigration actions and the Colleyville shooter was looking to get an al-Qaida fighter freed. “Of course, antisemitism is the broad brush,” he continued, “but if you look at recent attacks, they are really attacks against Jewish communities in the U.S. because American Jews are stand-ins for the Israelis that these attackers can’t reach.” 

CSI is responding in “a multitude of different ways,” Silber said. “It’s been a tsunami of requests from organizations.” 

“We’re encouraging any Jewish institution or organization to let us know if they are having an event and that way we can let local law enforcement know,” Silber continued, adding that the group’s new plans include subsidizing armed guards to complement law enforcement at outdoor events hosted by Jewish organizations, as well as expanding its team of analysts searching on social media, surface web and dark web for threats.  

“We have more hands on keyboards to give ourselves a better chance of detecting a Boulder or D.C. before it happens,” Silber said. 

Community Security Service, a group that provides self-defense and safety training to Jewish institutions, also told JI it is beefing up services in light of the recent attacks. 

“Both of the attacks within a two-week timespan have been accompanied by the same kind of slogans that we’ve been hearing on college campuses and yelled at synagogues,” said Richard Priem, CEO of CSS. “That is a new manifestation. Of course we are concerned.” 

Following Hamas’ Oct. 7, 2023, attack on Israel and ensuing war in Gaza, CSS saw a dramatic increase in Jewish communities requesting security support, which lasted for about a year, according to Priem. “But over the last two weeks, we’ve had dozens of inquiries from organizations,” he said. 

“We are making sure that more quarters of the community use the training that we have for them,” Priem said. “Not just by deploying volunteers for large- or small-scale events but also just giving them guidance and training on how to organize themselves in a way that makes them less vulnerable.”

“We will open some community-wide training sessions in the coming weeks that are open to anyone to give awareness to pre-attack indicators,” he continued. “We have to get out of this mindset that the only way we’re going to solve this is by outsourcing to more companies. We’re not going to get out of this situation unless we as a community start taking ownership and realize we have to do training. We have to pay attention. Whether there’s an increased threat or not, people should do preventative training now.” 

Marc Calcano, a former NYPD officer who runs a New York City-based private security firm with several high-profile Jewish clients, echoed that “the level of terror” American Jews face is “extremely high right now” and warned that the Boulder attack, in particular, could be easily replicated.

“I instruct individuals and large groups but I think it’s time for us to do this on a larger scale, which is creating an institution where many can come, here in New York and other states to learn how to physically defend yourself,” Calcano said.  

The Jewish community can use fear “to its advantage,” he continued. “We have to learn how to protect ourselves.”  

The Trump administration on Thursday stripped Harvard University of its ability to enroll foreign students, citing Harvard’s collaboration with the Chinese Communist Party, in what the Department of Homeland Security described as an act of accountability for the university “fostering violence, antisemitism and pro-terrorist conduct from students on its campus.” 

The move is an escalation in President Donald Trump’s battle with Harvard, just one front in his war with elite higher education institutions. He has already revoked billions of dollars in federal funding from Harvard, as well as several other universities. Trump has also sought the deportation of hundreds of foreign students on college campuses over their alleged support for terrorism and antisemitism.

But this is the first instance of the White House completely cutting off a university’s ability to admit international students. Harvard currently hosts more than 10,000 international students, according to university data. 160 of them are from Israel. Current students must transfer schools or lose their visa. 

“It is a privilege, not a right, for universities to enroll foreign students and benefit from their higher tuition payments to help pad their multibillion-dollar endowments. Harvard had plenty of opportunity to do the right thing. It refused,” Homeland Security Secretary Kristi Noem said in a statement. 

Last month, Noem asked Harvard to provide data on the disciplinary records of foreign students on campus and their record of participating in protests. Noem said the information shared by Harvard in response was “insufficient.” 

Harvard Hillel’s executive director, Rabbi Jason Rubenstein, expressed concern about the impact on Israeli students at Harvard.

“The current, escalating federal assault against Harvard — shuttering apolitical, life-saving research; threatening the university’s tax-exempt status; and revoking all student visas, including those of Israeli students who are proud veterans of the Israel Defense Forces and forceful advocates for Israel on campus — is neither focused nor measured, and stands to substantially harm the very Jewish students and scholars it purports to protect,” Rubenstein told Jewish Insider. 

A university spokesperson did not immediately respond to a request for comment. 

Barak Sella, an Israeli educator and researcher who earned a master’s degree from the Harvard Kennedy School in 2024, said the action will “be detrimental for the entire higher education system.”

“Never did any Jewish [organization] ask to ban the ability to accept foreign students, especially when a lot of the antisemitism is perpetrated by American citizens — aka the shooting last night,” Sella told JI, referring to the killing of two Israeli Embassy officials outside the Capital Jewish Museum in Washington. The alleged perpetrator is an American citizen. 

Harvard is likely to take legal action in response, according to The Crimson. 

Jewish Insider reporter Haley Cohen contributed to this report.