Malcolm X - The Oxford Union Debate (1964)

"On November 30, Malcolm X flew to the United Kingdom, where he participated in a debate at the Oxford Union on December 3. The topic of the debate was "Extremism in the Defense of Liberty is No Vice; Moderation in the Pursuit of Justice is No Virtue", and Malcolm X argued the affirmative. Interest in the debate was so high that it was televised nationally by the BBC."

 Source: http://en.wikipedia.org/wiki/Malcolm_X