Moscow : A man wearing a Vladimir Putin mask attends a rally in Moscow, Monday, Dec. 5, 2011. Several thousand people have protested in Moscow against Prime Minister Vladimir Putin and his party, which won the largest share of a parliamentary election that observers said was rigged. A group of several hundred then marched toward the Central Elections Commission near the Kremlin, but were stopped by riot police and taken away in buses. AP/PTI(AP12_6_2011_000008B)