Racism in the Soviet Union

Despite officially condemning nationalism and proclaiming internationalism, the Soviet Union in practice significantly marginalized and discriminated against people of certain ethnic groups designated as "enemies of the people", pushed their assimilation, and promoted chauvinistic Russian nationalistic and settler-colonialist activities in their lands.. The USSR used the term "nation" to refer to ethnic or national communities and or ethnic groups., and claimed to be supportive of the self-determination and rights of minorities and colonized peoples.

Source: Wikipedia — Racism in the Soviet Union (CC BY-SA 4.0)