Yuri Levada
Yuri Levada was the first professor to teach sociology at Moscow State University. During the political thaw initiated by Nikita Khrushchev, Levada was allowed to carry out limited surveys of public opinion. In one lecture, Levada had asserted that tanks could not change ideologies, a reference to the Soviet Union's 1968 invasion of Czechoslovakia. Yet, his first conflict with those in power came from a survey asserting that few actually read Pravda's notoriously longwinded editorials; and Pravda quickly and bitterly denounced the sociologist. In 1972, his institute was closed down during a Brezhnev-era purge of some 200 sociologists from research institutes and universities.
Levada was reinstated by reformist Soviet leader Mikhail Gorbachev as glasnost was under way. He went on to establish the All-Union Center for the Study of Public Opinion (VTsIOM) in 1987, which was renamed All-Russia Center for the Study of Public Opinion after the end of Soviet Union in 1991.