Stalinism is the totalitarian means of governing and Marxist–Leninist policies implemented in the Soviet Union (USSR) from 1927 to 1953 by dictator Joseph Stalin. Stalin had previously made a career as a gangster and robber, working to fund revolutionary activities, before eventually becoming General Secretary of the Soviet Union. Stalinism included the creation of a one man totalitarian police state, rapid industrialization, the theory of socialism in one country, forced collectivization of agriculture, intensification of class conflict, a cult of personality, and subordination of the interests of foreign communist parties to those of the Communist Party of the Soviet Union, which Stalinism deemed the leading vanguard party of communist revolution at the time. After Stalin's death and the Khrushchev Thaw, a period of de-Stalinization began in the 1950s and 1960s, which caused the influence of Stalin's ideology to begin to wane in the USSR.

Totalitarianism is a political system and a form of government that prohibits opposition political parties, disregards and outlaws the political claims of individual and group opposition to the state, and controls the public sphere and the private sphere of society. In the field of political science, totalitarianism is the extreme form of authoritarianism, wherein all socio-political power is held by a dictator, who also controls the national politics and the peoples of the nation with continual propaganda campaigns that are broadcast by state-controlled and by friendly private mass communications media.