The International Day for the Elimination of Racial Discrimination is observed annually on the day the police in Sharpeville, South Africa, opened fire and killed 69 people at a peaceful demonstration against apartheid “pass laws” in 1960. In 1979, the General Assembly adopted a programme of activities to be undertaken during the second half of the Decade for Action to Combat Racism and Racial Discrimination. On that occasion, the General Assembly decided that a week of solidarity with the peoples struggling against racism and racial discrimination, beginning on March 21st, would be organized annually in all States. https://www.un.org/en/observances/end-racism-day