Purim
There is a tale in the Hasidic Chabad movement that supposedly Joseph Stalin died as a result of some metaphysical intervention of the seventh Chabad leader, Rabbi Menachem Mendel Schneerson, during the recitation of a discourse at a public Purim Farbrengen. Stalin was suddenly paralyzed on 1 March 1953, which corresponds to Purim 1953, and died 4 days later. Due to Stalin's death, nationwide pogroms against Jews throughout the Soviet Union were averted, as Stalin's infamous doctors' plot was halted.
Eastern Bloc media and propaganda
Beginning in 1935, Joseph Stalin effectively sealed off outside access to the Soviet Socialist Republics (and until his death), effectively permitting no foreign travel inside the Soviet Union such that outsiders did not know of the political processes that had taken place therein. During this period, and even for 25 years after Stalin's death, the few diplomats and foreign correspondents that were permitted inside the Soviet Union were usually restricted to within a few miles of Moscow, their phones were tapped, their residences were restricted to foreigner-only locations and they were constantly followed by Soviet authorities. Dissenters who approached such foreigners were arrested. For many years after World War II, even the best informed foreigners did not know the number of arrest or executed Soviet citizens, or how poorly the Soviet economy had performed.