A supporter of Qadri, Sufi cleric and leader of political party PAT, sleeps along a road during the Revolution March during the early morning in Islamabad
A supporter (L) of Muhammad Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), sleeps along a road during the Revolution March during the early morning in Islamabad August 18, 2014. Police estimated on Sunday that around 55,000 people have occupied two streets in the centre of the Pakistani capital as part of separate protests led by Qadri and leading opposition politician Imran Khan. Both men say they will stay in the streets until Prime Minister Nawaz Sharif, whom they condemn as corrupt, resigns. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of ul-Qadri, Sufi cleric and leader of political party PAT, gesture as they chant slogans during the Revolution March in Islamabad
Supporters of Muhammad Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), gesture as they chant slogans during the Revolution March in Islamabad August 18, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. The numbers were far below what protest organisers expected, but the protesters' paralysis of the central business district is presenting the 15-month-old civilian government with its biggest challenge yet. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of ul-Qadri, Sufi cleric and leader of political party PAT, gesture as they chant slogans during the Revolution March in Islamabad
Supporters of Muhammad Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), gesture as they chant slogans during the Revolution March in Islamabad August 18, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. The numbers were far below what protest organisers expected, but the protesters' paralysis of the central business district is presenting the 15-month-old civilian government with its biggest challenge yet. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
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Imran Khan smiles to his supporters after his speech during the Freedom March in Islamabad
Imran Khan (C), cricketer-turned-opposition politician and chairman of the Pakistan Tehreek-e-Insaf (PTI) political party, smiles to his supporters after his speech during the fourth day of the Freedom March in Islamabad August 17, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
Supporters of Tahir ul-Qadri listen to a speech during the Revolution March in Islamabad
Supporters of Tahir ul-Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), wave party flags as they listen to his speech during the Revolution March in Islamabad August 17, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
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Supporter of Imran Khan builds a makeshift tent during the Freedom March in Islamabad
A supporter of Imran Khan, cricketer-turned-opposition politician and chairman of the Pakistan Tehreek-e-Insaf (PTI) political party, drapes himself with a Pakistan national flag as he builds a makeshift tent during the Freedom March in Islamabad August 17, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of Imran Khan chant slogans during the Freedom March in Islamabad
Supporters of Imran Khan, cricketer-turned-opposition politician and chairman of the Pakistan Tehreek-e-Insaf (PTI) political party, chant slogans while listening to their leader during the Freedom March in Islamabad August 17, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Imran Khan smiles to his supporters after his speech during the Freedom March in Islamabad
Imran Khan (C), cricketer-turned-opposition politician and chairman of the Pakistan Tehreek-e-Insaf (PTI) political party, smiles to his supporters after his speech during the fourth day of the Freedom March in Islamabad August 17, 2014. Tens of thousands of anti-government protesters flooded the centre of Pakistan's capital on Saturday, vowing to stay in the streets until Prime Minister Nawaz Sharif resigns. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)