Apartheid
Mandela emerged as a leading opponent of the white minority rule government during the later years of her husband's long imprisonment (August 1963 – February 1990). For many of those years, she was exiled to the town of Brandfort in the Orange Free State and confined to the area, except for the times she was allowed to visit her husband at the prison on Robben Island. Beginning in 1969, she spent eighteen months in solitary confinement at Pretoria Central Prison.
In a leaked letter to Jacob Zuma in October 2008, just-resigned President of South Africa Thabo Mbeki alluded to the role the ANC created for her in the anti-apartheid activism:
In the context of the global struggle for the release of political prisoners in our country, our movement took a deliberate decision to profile Nelson Mandela as the representative personality of these prisoners, and therefore to use his personal political biography, including the persecution of his then wife, Winnie Mandela, dramatically to present to the world and the South African community the brutality of the apartheid system.
Read more about this topic: Winnie Madikizela-Mandela