A riot police officer looks on as supporters of Tahir ul-Qadri move towards Prime Minister's house during the Revolution March in Islamabad
A riot police officer looks on as supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), move towards Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed.Pakistan has been gripped by unrest for more than two weeks, with protest leaders Imran Khan and Tahir ul-Qadri saying they will not back back down unless Prime Minister Nawaz Sharif resigns. On Saturday Sharif once again said he would not go. REUTERS/Zohra Bensemra (PAKISTAN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
A paramedic gives first aid to a policeman who was injured during a clash with supporters of Tahir ul-Qadri in Islamabad
A paramedic (L) gives first aid to a policeman who was injured during a clash with supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), while they were moving towards Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of Tahir ul-Qadri 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
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)
Supporters of Tahir ul-Qadri cover their faces to avoid tear gas fired by the police to disperse them while marching to the Prime Minister's house during the Revolution March in Islamabad
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 marching to 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 TPX IMAGES OF THE DAY)
A army soldier stands guard at a government building while supporters of Tahir ul-Qadri move towards the Prime Minister's house during the Revolution March in Islamabad
A army soldier stands guard at a government building while supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), move towards the Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
An army soldier tries to stop supporters of Tahir ul-Qadri as they move towards the Prime Minister's house during the Revolution March in Islamabad
An army soldier (R) tries to stop supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), as they move towards the Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST MILITARY)
A army soldier stands guard at a government building while supporters of Tahir ul-Qadri move towards the Prime Minister's house during the Revolution March in Islamabad
A army soldier stands guard at a government building while supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), move towards the Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of Tahir ul-Qadri stand on a container barricade while marching towards the Prime Minister's house during Revolution March in Islamabad
Supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), stand on a container barricade while marching towards the Prime Minister's house during Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed. Pakistan has been gripped by unrest for more than two weeks, with protest leaders Imran Khan and Tahir ul-Qadri saying they will not back back down unless Prime Minister Nawaz Sharif resigns. On Saturday Sharif once again said he would not go. REUTERS/Zohra Bensemra (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of ul-Qadri carry sticks as they move towards the Prime Minister's house during the Revolution March in Islamabad
Supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), carry sticks as they move 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/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
Riot police clash with supporters of Tahir ul-Qadri outside the Parliament house in Islamabad
Riot police clash with supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), outside the Parliament house as the supporters marched towards Prime Minister's house during the Revolution March in Islamabad August 30, 2014. Thousands of protesters massed outside the residence of Pakistani Prime Minister Nawaz Sharif on Saturday to demand he step down, after efforts to find a negotiated solution to the country's political crisis failed.Pakistan has been gripped by unrest for more than two weeks, with protest leaders Imran Khan and Tahir ul-Qadri saying they will not back back down unless Prime Minister Nawaz Sharif resigns. On Saturday Sharif once again said he would not go. REUTERS/Zohra Bensemra (PAKISTAN - Tags: POLITICS CIVIL UNREST)