The terms enemy of the people and enemy of the nation are designations for the political opponents and for the social-class opponents of the power group within a larger social unit, who, thus identified, can be subjected to political repression. In political praxis, the term enemy of the people implies that political opposition to the ruling power group renders the people in opposition into enemies acting against the interests of the greater social unit, e.g. the political party, society, the nation, etc.

Joseph Vissarionovich Stalin was a Georgian-born Soviet politician and revolutionary who was the longest-serving leader of the Soviet Union from 1924 until his death in 1953. He held power as General Secretary of the Communist Party from 1922 to 1952, and as Chairman of the Council of Ministers from 1941 until his death. Initially governing the country as part of a collective leadership, Stalin consolidated his power to become a dictator by the 1930s. Ideologically, he formalised his Leninist interpretation of Marxism as Marxism–Leninism, while the political and economic system he implemented is known as Stalinism.