Russia Opposition Protesters Mass for Second Moscow Rally

Dec. 24, 2011: Protesters gather to protest against alleged vote rigging in Russia's parliamentary elections on Sakharov avenue in Moscow, Russia. (AP)

Dec. 24, 2011: Protesters shout slogans during a protest against alleged vote rigging in Russia's parliamentary elections on Sakharov avenue in Moscow, Russia.

Dec. 24, 2011: Protesters carry a depiction of Putin bearing the words "Good Bye Putin" as they gather to protest against alleged vote rigging in Russia's parliamentary elections on Sakharov avenue in Moscow, Russia. (AP)

Dec. 24, 2011: Protesters gather to protest against alleged vote rigging in Russia's parliamentary elections on Sakharov avenue in Moscow, Russia. (AP)

Dec. 24. 2011: Protesters gather together to protest against alleged vote rigging in Russia's parliamentary elections on Sakharov avenue in Moscow, Russia. (AP)

Dec. 24, 2011: Demonstrators hold a poster showing Prime Minister Vladimir Putin and saying "Get tired! Go away!" during a rally protesting against election fraud in Moscow. (AP)

Dec. 24, 2011: Nationalist demonstrators hold their flags during a rally protesting against election fraud in Moscow. (AP)

Dec. 24, 2011: Protesters hold posters depicting Russian Prime Minister Vladimir Putin and Russian President Dmitry Medvedev wearing prisoner's uniform as they protest against alleged vote rigging in Russia's parliamentary elections in St. Petersburg, Russia. (AP)

Dec. 24, 2011: Police officers detain an opposition activist during a protest against alleged vote rigging in Russia's parliamentary elections in St. Petersburg, Russia. (AP)

Dec. 24, 2011: Police officers detain an opposition activist during a protest against alleged vote rigging in Russia's parliamentary elections in St. Petersburg, Russia. (AP)