National News How posters of kidnapped Israelis ignited a firestorm on American sidewalks In the weeks since Hamas attacked Israel, fliers depicting the hostages have become ubiquitous. But in cities and college campuses across the globe, anti-Israel protesters have removed them. Posters showing some of the people kidnapped by Hamas in Israel are displayed on a pole outside New York University on Monday. Some have been torn down. Spencer Platt / Getty Images “KIDNAPPED,” the posters say, in bright red block letters above pictures of people taken hostage by Hamas terrorists during the Oct. 7 attack in Israel, urgent reminders...