For six weeks now, Serbia has been rattled by what purports to be a student rebellion, leading to the prime minister’s resignation last week and rumors of a snap election. Students from sixty-three colleges of five state and two private universities, as well as four high schools, have emerged as the biggest challenge to the Progressive Party rule—and fueled rumors of yet another "color revolution." On Thursday, thousands of students rallied in the capital, Belgrade, and set out to Novi Sad—the second-largest city in Serbia and the site of a tragedy that has served as the trigger for the...