Free speech advocates contend colleges should be bastions of the free exchange of ideas. Texas campuses have been the stage of historical protests — from the civil rights movement to the Vietnam War. But this week, when demonstrators took over the University of Texas’ south mall to protest the war in Gaza and the system’s investment in companies that supply weapons to Israel, state troopers began arresting them. Advertisement Gov. Greg Abbott ordered the troopers to campus in a stark contrast to his statement in 2019 when he signed a bill protecting First Amendment rights at Texas schools. Advertisement At...