The Population Registration Act of 1950 required that each inhabitant of South Africa be classified and registered in accordance with their racial characteristics as part of the system of apartheid.

Apartheid was a system of institutionalised racial segregation that existed in South Africa and South West Africa from 1948 to the early 1990s. Apartheid was characterised by an authoritarian political culture based on baasskap, which ensured that South Africa was dominated politically, socially, and economically by the nation's minority white population. In this minoritarian system, there was social stratification, where white citizens had the highest status, followed by Indians and Coloureds, then Black Africans. The economic legacy and social effects of apartheid continue to the present day, particularly inequality.