The famous human rights activist in South Africa was Nelson Mandela. He is best known for his leadership in the struggle against the apartheid regime, which enforced racial segregation and discrimination. Mandela's activism began in the African National Congress (ANC), where he advocated for equality and justice. After being imprisoned for 27 years, he was released in 1990 and played a pivotal role in negotiating the end of apartheid. In 1994, he became South Africa's first black president in a historic democratic election, symbolizing the triumph of anti-apartheid efforts and inspiring global movements for justice and human rights.