American Jewish communities are facing renewed fear amid a surge in antisemitic violence, with a recent knife attack in London’s Golders Green neighborhood—declared a terroristic act against Jews—sparking heightened caution. Diane Rosenthal, 64, of Pittsburgh, who lost two brothers in the 2018 Tree of Life synagogue shooting, now scrutinizes crowded events for exits. Rabbi Shimon Dudai of Key West’s Congregation B’nai Zion carries a nine-millimeter pistol in a traditional lectern, stating he does not want to come to a holy space holding a gun but feels compelled to defend his community if capable. Joseph Landsberg, Boca Raton Synagogue’s security director, notes the “constant level of concern” has intensified since the Oct. 7 Hamas attack on Israel, with his team implementing extra security measures after the London incident.

Over half of American Jews have altered their behavior due to high-profile attacks in 2025, including the arson at Gov. Josh Shapiro’s home and the killing of Israeli Embassy aides in D.C., according to an American Jewish Committee survey. Leah C. Hibel, a UC Davis professor, links these attacks to “acute fear spikes” and higher baseline anxiety. Synagogues like Boca Raton now have armed guards, bulletproof windows, and volunteer screenings. Beejhy Barhany, a Harlem restaurant owner harassed for years with threats, closed her cafe to private Shabbat dinners, stating she no longer needs security. Carole Zawatsky, Tree of Life’s CEO, calls the experience a “Jewish tax,” impacting young Jews’ psyche with constant checks. Meanwhile, Mark J. Schwartz, Teaneck’s Orthodox mayor, now carries a baseball hat for protection, contrasting his past practice of wearing a yarmulke everywhere—until he feared a backlash in Paris.

The attacks reflect a normalization of antisemitism, with victims like Rosenthal and Dudai expressing disheartening trends. Barhany’s decision to close her cafe and Zawatsky’s emphasis on interfaith dialogue against hatred are concrete responses to a community under constant threat, reshaping Jewish life through heightened vigilance and behavioral changes.