A policeman fires tear gas to disperse supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), during the Revolution March towards the prime minister's house in Islamabad September 1, 2014. Pakistani protesters pushed closer to the prime minister's house in central Islamabad on Monday in their bid to force his removal and forced national television off the air after clashes turned violent over the weekend. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)