Student protesters clashed with Iranian police officers and religious vigilantes outside the University of Tehran on Wednesday night during a demonstration against “new restrictions imposed by the university,” the ouster of nine law professors, and the arrest on spying charges of Ramin Jahanbegloo, a prolific scholar who directs a cultural-research center in Tehran (The Chronicle, May 11). Officials said 40 policemen were injured by “20 or 30” protesters, according to a report on the Asia News Web site, but the students said they numbered 2,000. The episode could mark the return of student protests as a major political force in Tehran for the first time since 1999, when students took to the streets in violent demonstrations sparked by a dormitory raid by religious vigilantes (The Chronicle, July 23, 1999). The protests prompted a crackdown that led to 1,400 arrests and suppressed dissent on the campus.