A man takes part in an authorized opposition protest against the alleging mass fraud in the December 4 parliamentary polls in central St.Petersburg, on December 10, 2011.The sign reads: "I have no vote." Tens of thousands of election protesters turned out today in Moscow and other major cities across Russia in open defiance to strongman Vladimir Putin's 12-year rule. AFP PHOTO / OLGA MALTSEVA

Police officers detain an opposition activist outside the area of an authorized opposition protest against the alleging mass fraud in the December 4 parliamentary polls in central St.Petersburg, on December 10, 2011. Tens of thousands of election protesters turned out today in Moscow and other major cities across Russia in open defiance to strongman Vladimir Putin's 12-year rule. AFP PHOTO / OLGA MALTSEVA

People shout during an authorized opposition protest against the alleging mass fraud in the December 4 parliamentary polls at the Bolotnaya Square in central Moscow, on December 10, 2011. Tens of thousands of election protesters turned out today in Moscow and other major cities across Russia in open defiance to strongman Vladimir Putin's 12-year rule. AFP PHOTO / ALEXANDER NEMENOV

People shout during an authorized opposition protest against the alleging mass fraud in the December 4 parliamentary polls at the Bolotnaya Square in central Moscow, on December 10, 2011. Tens of thousands of election protesters turned out today in Moscow and other major cities across Russia in open defiance to strongman Vladimir Putin's 12-year rule. AFP PHOTO / ALEXANDER NEMENOV

People take part in an authorized opposition protest against the alleging mass fraud in the December 4 parliamentary polls at the Bolotnaya Square in central Moscow, on December 10, 2011. Tens of thousands of election protesters turned out today in Moscow and other major cities across Russia in open defiance to strongman Vladimir Putin's 12-year rule. AFP PHOTO / ALEXANDER NEMENOV

An opposition activist shouts during an authorized opposition protest against the alleging mass fraud in the December 4 parliamentary polls in central Moscow, on December 10, 2011. Tens of thousands of election protesters turned out today in Moscow and other major cities across Russia in open defiance to strongman Vladimir Putin's 12-year rule. AFP PHOTO / Alexey SAZONOV

A protester holds a portrait of Putin with the words read as " we are going different ways" during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011. Russians angered by allegedly fraudulent parliamentary elections are protesting Saturday in cities from the freezing Pacific Coast to the southwest of Russia, eight time zones away, a striking show of indignation, challenging Prime Minister Vladimir Putin's hold on power. ( AP Photo/Mikhail Metzel)

Protesters seen during a rally in downtown St.Petersburg, Russia, Saturday, Dec. 10, 2011. The sign reads "No vote". More than ten thousands people have protested in St.Petersburg against Prime Minister Vladimir Putin and his party, which won the largest share of a parliamentary election that observers said was rigged. (AP Photo/Dmitry Lovetsky)

A protester seen during a rally in downtown St.Petersburg, Russia, Saturday, Dec. 10, 2011. The sign reads "No vote". More than ten thousands people have protested in St.Petersburg against Prime Minister Vladimir Putin and his party, which won the largest share of a parliamentary election that observers said was rigged. (AP Photo/Dmitry Lovetsky)

Riot police detain a protester during a rally in downtown St.Petersburg, Russia, Saturday, Dec. 10, 2011. More than ten thousands people have protested in St.Petersburg against Prime Minister Vladimir Putin and his party, which won the largest share of a parliamentary election that observers said was rigged. (AP Photo/Dmitry Lovetsky)