American Jews are installing security systems and buying guns in large numbers, according to survey data released nearly two years into the war in Gaza.The surveys by the Anti-Defamation League and Jewish Federations of North America took the pulse of US Jews as the second anniversary approached of Hamas' Oct. 7, 2023, attack on Israel that triggered the war and a wave of anti-Israel and antisemitic incidents around the world.The analysis found that nearly one in five American Jews were the