Supporters of Tahir ul-Qadri carry sticks as they gather before going 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 gather before going 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 try to remove the barbed wire to get on top of the container barricade as they go 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), try to remove the barbed wire to get on top of the container barricade as they go 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/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
A supporter of Tahir ul-Qadri tries to stop fellow supporters from attacking riot police in Islamabad
A supporter (R) of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), tries to stop fellow supporters from attacking riot police while going 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)
A supporter of Tahir ul-Qadri holds a police shield he stands amidst tear gas smoke during clashes with riot police in Islamabad
A supporter of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), holds a police shield he stands amidst tear gas smoke during clashes with riot police as Tahir ul-Qadri supporters went 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)
A supporter of Tahir ul-Qadri chants slogans as he goes towards the Prime Minister's house with others during the Revolution March in Islamabad
A supporter of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), chants slogans as he goes towards the Prime Minister's house with others 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/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
A supporter of Tahir ul-Qadri provides first aid to a fellow supporter as others cover their faces to avoid tear gas fired by the police in Islamabad
A supporter of Tahir ul-Qadri, Sufi cleric and leader of the Pakistan Awami Tehreek (PAT) political party, provides first aid to a fellow supporter as others cover their faces to avoid tear gas fired by the police to disperse them while going towards to 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/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Riot police look on as supporters of Tahir ul-Qadri go towards Prime Minister's house during the Revolution March in Islamabad
Riot police look on as supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), go 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)
Supporters of Tahir ul-Qadri stand on a container barricade while going 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 going 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 Tahir ul-Qadri stand on a container barricade while moving 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 moving 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/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of Tahir 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. 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/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)