Sergei Stanislavovich Udaltsov (Russian: Серге́й Станиславович Удальцов; born 16 February 1977) is a Russian left-wing political activist. He is the unofficial leader of the Vanguard of Red Youth (AKM). In 2011 and 2012, he helped lead a series of protests against Vladimir Putin. In 2014 he was sentenced to 4¹⁄₂ years in a penal camp for organizing the May 2012 protest which ended in violence between the police and demonstrators. On 4 December 2011, the day of the Russian legislative elections, Udaltsov was arrested in Moscow for allegedly "resisting officers' recommendations to cross the road in the correct place" and detained for five days. As he finished this, Udaltsov was immediately rearrested and given a 15-day sentence for allegedly earlier leaving hospital without permission when he was being treated there during a previous, different period of detention in October. Around twenty officers came to pick him up, together with plainclothes members of the FSB. More information...
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