Hundreds of thousands of protesters pack Moscow's Manezh Square next to the Kremlin, Sunday, March 10, 1991, demanding the Soviet President Mikhail Gorbachev and his fellow Communists give up power. The crowd, estimated at 500,000 was the biggest anti-government demonstration in the 73 years since the Communists took power, and came a week before the nationwide referendum on Gorbachev's union treaty. (AP Photo/Dominique Mollard)

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