LOS ANGELES (AP) — Police have arrested nearly 2,200 people during pro-Palestinian protests at college campuses across the United States in recent weeks. They have sometimes used riot gear, tactical vehicles and flash-bang devices to clear tent encampments and occupied buildings. At Columbia University, one officer accidentally discharged his gun inside an administration building while clearing out protesters camped inside. That’s according to the NYPD. No one was injured by the officer’s actions. A tally by The Associated Press recorded at least 56 incidents of arrests at 43 different U.S. colleges or universities since April 18 stemming from recent campus protests over the Israel-Hamas war.