FILE - Pro-Palestinian protesters demonstrate during the University of Michigan's Spring 2024 Commencement Ceremony at Michigan Stadium in Ann Arbor, Mich., May 4, 2024. As pro-Palestinian protests escalate on college campuses around the country, critics of President Joe Biden’s handling of the Israel-Hamas war suggest this summer’s Democratic National Convention could be marred by protests and scenes of chaos that undermine his reelection. It raises the specter of a replay of 1968’s Democratic convention in Chicago, where a violent police crackdown created indelible scenes of chaos. (Jacob Hamilton/Ann Arbor News via AP, file)