How Columbia's protest of the Israel-Hamas war spurred a national movement The Associated PressPro-Palestinian Encampments Spread, Leading to Hundreds of Arrests The New York TimesWATCH LIVE: Counterprotesters descend upon Columbia's campus after violent anti-Israel riots Fox NewsJohnson demands Biden send in National Guard during raucous Columbia visit POLITICOA look at the Gaza war protests that have emerged on US college campuses The Associated Press