Demonstrators gather for a massive protest against Prime Minister Vladimir Putin’s rule in Moscow, Saturday, Feb. 4, 2012 with the Kremlin in the background. Thousands of Russians are taking to the streets of Moscow to demand an end to Prime Minister Vladimir Putin’s rule, challenging his bid to reclaim presidency in March. The protest expected to draw tens of thousands despite temperatures plunging to minus 20 C (minus 4 F). (AP Photo/Alexander Zemlianichenko Jr )