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.
Alexander Shumsky
In 1946 Shumsky twice unsuccessfully tried to end his life in suicide. In September 1946 on his way to Ukraine, he was killed by special group of the Ministry of State Security of the Soviet Union on personal order of Joseph Stalin.