Police have begun arresting demonstrators from a Jewish group who filled the lobby of Trump Tower to denounce the immigration arrest of a Columbia University activist who helped lead student protests on the Manhattan campus against Israel's actions in Gaza. The Jewish Voice for Peace protesters wore red shirts reading “Jews say stop arming Israel” at Thursday's protest and chanted “Bring Mahmoud home now!” Mahmoud Khalil, a permanent U.S. resident who is married to an American citizen and hasn’t been charged with breaking any laws, was arrested outside his New York City apartment on Saturday and faces deportation. He's being held in Louisiana. Police began arresting protesters about an hour into the demonstration.