History of the Soviet Union (1964–82) Soviet Union "would result in a crushing retaliatory blow". Though Brezhnev's time in office would later be characterized as one of stability, early on, Brezhnev oversaw the replacement of half of the regional leaders and Politburo members. This was a typical move for a Soviet leader trying to strengthen his power base. Examples of Politburo members who lost their membership during the Brezhnev Era are Gennady Voronov, Dmitry Polyansky, Alexander Shelepin, Petro Shelest and Podgorny. Polyansky and Voronov lost their membership in the Politburo because they were considered to be members of the "Kosygin faction." In their place came Andrei
Censorship of images in the Soviet Union was also among the first members of the Politburo. He became an enemy of the State and was erased from Soviet history after leading the failed struggle of the Left Opposition against the policies and rise of Joseph Stalin in the 1920s and the increasing bureaucratization of the Soviet Union. Trotsky was expelled from the Communist Party and deported from the Soviet Union in the Great Purge. As the head of the Fourth International, he continued in exile to oppose the Stalinist bureaucracy in the Soviet Union, and was eventually assassinated in Mexico by Ramón Mercader, a Soviet agent who