FILE - People hold their ground near a main gate at Columbia University in New York, Tuesday, April 30, 2024, as New York City police officers move to clear the area after a building was taken over by protesters earlier today. Colleges and universities have long been protected places for free expression without pressure or punishment. But protests over Israel's conduct of the war in Gaza in its hunt for Hamas after the Oct. 7 massacre has tested that ideal around the world. (AP Photo/Craig Ruttle, File)