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.
Lenin's Mausoleum
Joseph Stalin's embalmed body shared a spot next to Lenin's, from the time of his death in March 1953 until October 1961, when Stalin was removed as part of de-Stalinization and Khrushchev's Thaw, and buried in the Kremlin Wall Necropolis outside the walls of the Kremlin.