Sergei Udaltsov
Biography
Sergei Udaltsov is a Russian left-wing political activist, known for his role in leading protests against Vladimir Putin in 2011 and 2012. In 2014, he was sentenced to 4½ years in a penal camp for organizing a May 2012 protest that turned violent. Udaltsov has been detained multiple times, including a 15-day sentence for allegedly leaving hospital without permission. He has been an unofficial leader of the Vanguard of Red Youth.