Adaption of a more militant posture was a change of tactics for the protest movement which heretofore had dutifully sought permits and maintained a peaceful atmosphere. "
He served as a campaign manager for Communist Party of the Russian Federation candidate Gennady Zyuganov during the 2012 presidential election. Following the broadcast an SK spokesman stated that the government was considering terrorism charges against Udaltsov on the basis of the video and Razvozzhayev Udaltsov and Konstantin Lebedev an assistant of Udaltsov's were charged with "plotting mass disturbances".
In 2011 and 2012 he helped lead a series of protests against Vladimir Putin. Sergei Stanislavovich Udaltsov (Russian: Сергей Станиславович Удальцов; born 16 February 1977) is a Russian political activist and leader of the Left Front movement.