Egyptian soldiers stand guard in front of the U.S. National Democratic Institute, an NGO rights group in downtown Cairo on December 29, 2011. Filippo Monteforte/AFP/Getty Images hide caption

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In Cairo earlier today, a masked Egyptian protester prepared to throw back a tear gas canister fired by security forces. Mahmud Hams/AFP/Getty Images hide caption

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Flares were thrown in the stadium during clashes that erupted after a football match between Egypt's Al-Ahly and Al-Masry teams in Port Said. AFP/Getty Images hide caption

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Wael Ghonim talking with reporters on Feb. 8, 2011, in Cairo's Tahrir Square as protests there continued. Khaled Desouki /AFP/Getty Images hide caption

itoggle caption Khaled Desouki /AFP/Getty Images

Egyptian army soldiers arrest a female protester during clashes at Tahrir Square in Cairo on Dec. 17. Stringer/Reuters/Landov hide caption

itoggle caption Stringer/Reuters/Landov