Protesters flood Moscow’s streets

Demonstrators carry a huge Russian flag as they parade during an opposition rally “For Russia without Putin!” in St. Petersburg, Russia.  (Anatoly Maltsev / EPA)

Opposition activists carry a model of a prison cell with the cutout figure of President Vladimir Putin during a rally Tuesday in St. Petersburg against his third term.  (Olga Maltseva / AFP/Getty Images)

An elderly woman holds a white umbrella as a symbol of protest as she walks past a line of police officers after a massive opposition rally in central Moscow on Tuesday. Tens of thousands of Russians flooded Moscow’s tree-lined boulevards Tuesday in the first massive protest against President Vladimir Putin’s rule since his inauguration, as investigators sought to raise the heat on the opposition by summoning some of its leaders for questioning just an hour before the march.  (Alexander Zemlianichenko / Associated Press)

Ultra-nationalists stand amid torrential rainfall as they prepare to take part in the rally against the government called “For honest power, for Russia without Putin!” in Moscow on Tuesday. A number of different political groups participated in the anti-government demonstration.  (Sergei Chirikov / EPA)