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Freed anti-apartheid leader and African National Congress (ANC) member Nelson Mandela (L) and ANC general secretary and former Robben Island prison inmate Walter Sisulu raise their fist, 12 February 1990 in the garden of Desmond Tutu's residence in Cape Town, one day after the release from jail of Nelson Mandela. (Photo credit should read WALTER DHLADHLA/AFP/Getty Images)

Freed anti-apartheid leader and African National Congress (ANC) member Nelson Mandela (L) and ANC general secretary and former Robben Island prison inmate Walter Sisulu raise their fist, 12 February 1990 in the garden of Desmond Tutu's residence in Cape Town, one day after the release from jail of Nelson Mandela.        (Photo credit should read WALTER DHLADHLA/AFP/Getty Images)

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Shortly after his release from prison, South African anti-apartheid leader Nelson Mandela walks with his wife, Winnie Mandela, at Desmond Tutu's residence in Cape Town, South Africa, February 12, 1990. (Photo by Susan Winters Cook/Getty Images)

Shortly after his release from prison, South African anti-apartheid leader Nelson Mandela walks with his wife, Winnie Mandela, at Desmond Tutu's residence in Cape Town, South Africa, February 12, 1990. (Photo by Susan Winters Cook/Getty Images)

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Anti-apartheid leader and African National Congress (ANC) member Nelson Mandela waves to well-wishers while his wife Winnie smiles from the garden of Archbishop Desmond Tutu's residence 12 February 1990 in Cape Town. After the banning of the ANC in 1960, Nelson Mandela argued for the setting up of a military wing within the ANC. On June 12, 1964, eight of the accused, including Mandela, were sentenced to life imprisonment. Nelson Mandela was released 11 February 1990. AFP PHOTO WALTER DHLADHLA (Photo credit should read WALTER DHALDHLA/AFP/Getty Images)

Anti-apartheid leader and African National Congress (ANC) member Nelson Mandela waves to well-wishers while his wife Winnie smiles from the garden of Archbishop Desmond Tutu's residence 12 February 1990 in Cape Town. After the banning of the ANC in 1960, Nelson Mandela argued for the setting up of a military wing within the ANC. On June 12, 1964, eight of the accused, including Mandela, were sentenced to life imprisonment. Nelson Mandela was released 11 February 1990. AFP PHOTO WALTER DHLADHLA        (Photo credit should read WALTER DHALDHLA/AFP/Getty Images)

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Anti-apartheid leader and African National Congress (ANC) member Nelson Mandela smiles and clenches his fist as he poses during a photo session after his first press conference since his release from jail, 12 February 1990 in Cape Town. AFP PHOTO WALTER DHLADHLA (Photo credit should read WALTER DHLADHLA/AFP/Getty Images)

Anti-apartheid leader and African National Congress (ANC) member Nelson Mandela smiles and clenches his fist as he poses during a photo session after his first press conference since his release from jail, 12 February 1990 in Cape Town. AFP PHOTO WALTER DHLADHLA        (Photo credit should read WALTER DHLADHLA/AFP/Getty Images)