16 February 1989
The UDF publicly disowns Winnie Mandela over a series of allegations that finally estranged her from her husband Nelson Mandela. Key among some of these allegations is the kidnapping and murder of a young boy called Stompie Seipei. Read Winnie's unofficial biography.
References

Kraft, S., (1989), S.Africa Black Group Disowns Winnie Mandela, from Los Angelis Times, 17 February [online], Available at articles.latimes.com [Accessed: 29 January 2014]|TNA, This Day in History, from The New Age, [online], Available at www.thenewage.co.za [Accessed: 29 January 2014]