Dueling groups of protesters clashed overnight at the University of California, Los Angeles, shoving, kicking and beating each other with sticks after pro-Israel demonstrators tried to pull down barricades surrounding a pro-Palestinian encampment. UCLA canceled classes Wednesday. Late Tuesday, police burst into a Columbia University building occupied by pro-Palestinian protesters and broke up a demonstration that had paralyzed the school. New York City Mayor Eric Adams said Wednesday that police arrested almost 300 protestors at Columbia and City College. Police also cleared an encampment at Tulane University in New Orleans early Wednesday.