Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Iranian Anti-Government Protesters Clash With Security Forces VOA News Iranian protesters took to the streets in the third day of demonstrations against the government after it acknowledged mistakenly shooting down a Ukrainian passenger jet, killing all 176 aboard. Video posted online showed students outside universities in Tehran and Isfahan Monday chanting at the country's rulers, "Clerics get lost!" Earlier videos from the night before appear to show security forces firing live ammunition and tear gas at the protesters in Tehran. Authorities denied they opened fire but the semi-official Fars news agency reported police had "shot tear gas in some areas" in an attempt to disperse the demonstrators. The videos showed protesters coughing and sputtering as they tried to escape the tear gas fumes. VOA could not independently verify the authenticity of the videos. Tehran's police chief, Gen. Hossein Rahimi, insisted authorities treated protesters with "patience and tolerance." .