<human>:  When did the Anti-apartheid movement start?
<bot>: The Anti-apartheid movement started in the late 1940s, and lasted until the mid-1980s. It was a political movement to end the apartheid system of South Africa, which was a racist policy that separated people based on race and allowed for the enslavement of black people. The Anti-apartheid movement was led by Nelson Mandela, who was the first black person elected to the presidency of South Africa.