AP Photo/Alexander Zemlianichenko
With St. Basil's Cathedral in the background, protesters wave a red flag as a symbol of revolution as they march 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
Demonstrators hold posters demanding a new election during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Mikhail Metzel
An elderly demonstrator holds a poster showing an edited photo of Prime Minister Vladimir Putin reading "2050. No," during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Dmitry Lovetsky
A protester stands during a rally in downtown St. Petersburg, Russia, Saturday, Dec. 10, 2011. A sign reads "No vote." More than 10,000 people protested in St. Petersburg against Prime Minister Vladimir Putin and his party, which won the largest share of a parliamentary election that observers say was rigged.
AP Photo/Alexander Zemlianichenko
Protesters gather together to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Ivan Sekretarev
People stand on the bridge as they attend a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011. The banner on the bridge reads: "Crooks, give us the election back."
AP Photo/Alexander Zemlianichenko
Protesters march through the Bolshoi Moskvoretsky bridge during a mass rally to protest alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011, with Red Square blocked by police trucks in the background.
Protests took place in at least 15 cities across several time zones, most attracting crowds of several hundred to a thousand. More than 30,000 were expected at the rally in Moscow.
AP Photo/Sergey Ponomarev
Police guard the Red Square area during a mass protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
YURI KADOBNOV/AFP/Getty Images
Riot police officers stand near security trucks during an authorized opposition protest against the government, in central Moscow, December 10, 2011.
Hundreds of security trucks blocked off central squares while helicopters patrolled the skies, as Moscow deployed more than 50,000 riot police and troops on the biggest day of protest to hit Russia since the turbulent 1990s.
AP Photo/Mikhail Metzel
A demonstrator holds a leaflet that reads, "The United Russia party is a party of crooks and thieves," during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Mikhail Metzel
Demonstrators shout during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Dmitry Lovetsky
Protesters gather during a rally in downtown St. Petersburg, Russia, Saturday, Dec. 10, 2011.
AP Photo/Alexander Zemlianichenko
Protesters shout anti-Putin slogans during a mass rally to protest alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011, with the Kremlin is the background.
YURI KADOBNOV/AFP/Getty Images
An opposition activist shouts during a protest rally against the alleging mass fraud in the December 4 parliamentary polls in central Moscow, on December 10, 2011.
AP Photo/Mikhail Metzel
Opposition leader Boris Nemtsov speaks at a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
YURI KADOBNOV
Opposition activists protest against the alleging mass fraud in the December 4 parliamentary polls in central Moscow, on December 10, 2011. The posters with photos of Russian President Dmitry Medvedev and Prime Minister Vladimir Putin read: "Boys, it's time to go!"
The partly-seen poster (right), which shows a photo of Vladimir Lenin's Mausoleum with the sign "Putin" on it, reads: "We believe, hope and expect [to witness this]!"
AP Photo/Mikhail Metzel
Protesters shout anti-Putin slogans during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Dmitry Lovetsky
Riot police detain a protester during a rally in St. Petersburg, Russia, Saturday, Dec. 10, 2011. More than 10,000 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 say was rigged.
AP Photo/Dmitry Lovetsky
An opposition activist fights with a police officer during a rally in downtown St.Petersburg, Russia, Saturday, Dec. 10, 2011.
AP Photo/Ivan Sekretarev
Police vehicles are seen on Bolshoy Zamoskvoretsky Bridge during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
Harry Engels/Getty Images
Signs are held aloft as the protest in Bolotnaya Square comes to an end on December 10, 2011 in Moscow, Russia.
AP Photo/Pavel Golovkin
Protesters light flares during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.
AP Photo/Sergey Ponomarev
Protesters light flares during a mass rally to protest against alleged vote rigging in Russia's parliamentary elections in Moscow, Russia, Saturday, Dec. 10, 2011.