Premise: Nelson Rolihlahla Mandela ( [ mænˈdɛlə ] 18 July 1918 -- 5 December 2013 ) was a South African anti-apartheid revolutionary , politician , and philanthropist , who served as President of South Africa from 1994 to 1999 . Ideologically an African nationalist and socialist , he served as President of the African National Congress ( ANC ) party from 1991 to 1997 . Although initially committed to non-violent protest , in association with the SACP he co-founded the militant Umkhonto we Sizwe in 1961 and led a sabotage campaign against the government .
Hypothesis: Nelson Mandela avoided any involvement in politics.
Label: CONTRADICTION