

Students face riot police near Tehran University, during a clash which started when police occupied and closed the main entrance gate of the university, in Tehran, Iran, Tuesday July 13, 1999. In a flashback to the revolution that installed Iran's Islamic government 20 years ago, police fired tear gas at some 10,000 protesters on the streets of Tehran after they marched for a sixth day in protest of hard-liners who have thwarted efforts to institute reforms.