There have continued to be antisemitic incidents since WWII, some of which had been state-sponsored. In the Soviet Union, antisemitism has been used as an instrument for settling personal conflicts starting with the conflict between Joseph Stalin and Leon Trotsky and continuing through numerous conspiracy theories spread by official propaganda. Antisemitism in the USSR reached new heights after 1948 during the campaign against the "rootless cosmopolitan" (euphemism for "Jew") in which numerous Yiddish-language poets, writers, painters, and sculptors were killed or arrested. This culminated in the so-called Doctors' Plot in 1952.
