Los Angeles, May 2 -- A brawl erupted at UCLA after a pro-Palestinian encampment was "forcefully attacked" the school's chancellor said on Wednesday, while activists at the University of Wisconsin in Madison clashed with police officers who destroyed their tents, in a day of escalating violence on some college campuses over the war in Gaza.Fifteen people were injured during the UCLA confrontation, including one person who was hospitalised, according to the president of the University of California system.

The chaotic scenes unfolded on Wednesday after police burst into a building occupied by anti-war protesters at Columbia University on Tuesday night, breaking up a demonstration that had paralysed the school.

Chancellor Gene Block at UC...