South Africa's African National Congress Party to Mark 100th Anniversary.

South Africa's African National Congress party, which struggled to end a whites-only government and inspired people around the world, will mark its 100th anniversary on Sunday. (AP)

In this March 28 1960 file photo, members of the African National Congress take part in a day of mourning at Orlando East, near Johannesburg, South Africa. (AP)

An April 27, 1994 aerial file photo shows long lines of people queuing outside the polling station in the black township of Soweto, in the southwest suburbs of Johannesburg, South Africa. (AP)

A 1990 file photo showing Nelson Mandela and his then wife Winnie walking upon his release from Victor prison, Cape Town, South Africa. (AP)

South African Deputy President F.W. de Klerk, and South African President Nelson Mandela pose with their Nobel Peace Prize Gold Medal and Diploma, in Oslo, on December 10, 1993. (AP)

Then African National Congress leader Thabo Mbeki is sworn in as a member of parliament in Cape Town's Parliament, Monday June 14, 1999. (AP)

Newly elected ANC President Jacob Zuma greets supporters at the ruling party's 96th birthday celebrations in 2008. (AP)

African National Congress president Jacob Zuma, attends a 2009 election rally. (AP)