Supporters of Tahir ul-Qadri, Sufi cleric and leader of the Pakistan Awami Tehreek (PAT) political party, cover their faces to avoid tear gas fired by the police to disperse them while moving towards the Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Prime Minister Nawaz Sharif came under new pressure to resign on Friday as thousands massed outside his residence following more than two weeks of demonstrations against his rule. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)