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Photo by: Tara Todras-Whitehill

Anti-government protesters gather outside the ruling National Democratic Party headquarters, as it is engulfed by flames in Cairo, Egypt, Friday, Jan. 28, 2011. Tens of thousands of anti-government protesters poured into the streets of Egypt Friday, stoning and confronting police who fired back with rubber bullets and tear gas in the most violent and chaotic scenes yet in the challenge to President Hosni Mubarak's 30-year rule. (AP Photo/Tara Todras-Whitehill)

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