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Photo by: Emilio Morenatti

Anti-government protesters shout slogans as they march toward Tahrir, or Liberation, Square in downtown Cairo on Tuesday, Feb. 1, 2011. Egyptian authorities battled to save President Hosni Mubarak's regime with a series of concessions and promises to protesters, but realities on the streets of Cairo may be outrunning his capacity for change. (AP Photo/Emilio Morenatti)

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