Protesters gather in Cairo on the second anniversary revolution

Thousands of protesters converged on the capital's iconic Tahrir Square on Friday
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An Egyptian protester runs with a live tear gas canister during clashes with riot police in Tahrir Square on January 25, in Cairo, Egypt. Thousands of protesters converged on the capital's iconic Tahrir Square on Friday to mark the second anniversary of the overthrow of former President Hosni Mubarak's regime. (Getty Images)
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An Egyptian protester is carried away after being injured during a protest in Tahrir Square on January 25, 2013 in Cairo. Huge crowds are expected to demonstrate in Egypt on the second anniversary of the revolution that ousted Hosni Mubarak and brought in an Islamist government, as political tensions simmer and economic woes bite. (AFP/Getty Images)
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An Egyptian protester wave a flag siiting on a branch during a protest in Tahrir Square on January 25, 2013 in Cairo. Huge crowds are expected to demonstrate in Egypt on the second anniversary of the revolution that ousted Hosni Mubarak and brought in an Islamist government, as political tensions simmer and economic woes bite. (AFP/Getty Images)
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An Egyptian protester lights flares during a demonstration in Cairo's landmark Tahrir Square on January 25, 2013. Thousands of Egyptians marched on Tahrir Square to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby. (AFP/Getty Images)
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Thousands of Egyptian protesters gather for a demonstration in Cairo's landmark Tahrir Square on January 25, 2013. Thousands of Egyptians marched on Tahrir Square to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby. (AFP/Getty Images)
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Egyptian protesters shout slogans as they march from Mostafa Mahmud mosque to Tahrir Square in Cairo on January 25, 2013. Thousands of Egyptians marched on Tahrir Square to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby. (AFP/Getty Images)
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Egyptian protesters storm into the offices of a website affiliated with the Muslim Brotherhood in downtown Cairo near Tahrir Square on January 25, 2013. Egyptian protesters torched a Muslim Brotherhood headquarters and clashed violently with police as mass rallies shook the country on the second anniversary of an uprising that ousted Hosni Mubarak and ushered in Islamic rule. (AFP/Getty Images)
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An Egyptian protester wearing empty tear gas canisters around his neck carries an Egyptian flag during a demonstration in Tahrir Square on January 25, in Cairo, Egypt. Thousands of protesters converged on the capital's iconic Tahrir Square on January 25, to mark the second anniversary of the overthrow of former President Hosni Mubarak's regime. (Getty Images)
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An injured Egyptian protester is led away from clashes between demonstrators and police during a protest in Tahrir Square on January 26, 2013 in Cairo, Egypt. Further protests are expected today after thousands of protesters converged on the capital's iconic Tahrir Square yesterday on January 25 to mark the second anniversary of the overthrow of former President Hosni Mubarak's regime. (Getty Images)
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An Egyptian protester leads others in chants during a demonstration in Tahrir Square on January 25, in Cairo, Egypt. Thousands of protesters converged on the capital's iconic Tahrir Square on January 25, to mark the second anniversary of the overthrow of former President Hosni Mubarak's regime. (Getty Images)