Ali opting out of the Vietnam draft was a huge, huge moment in sports history.
He was at his absolute peak abilities at a boxer. The stand he took against the war caused his title to be taken from him, as he knew that it would. Jail time was even a possibility, but he did not waver from his beliefs...
[Ali]
I ain't draft dodging. I ain't burning no flag, and I ain't runnin' to Canada. I'm stayin' right here. You want to send me to jail? Fine, you go right ahead. I've been in jail for 400 years. I could be there for four or five more, but I ain't goin' no 10,000 miles to help murder and kill other poor people. If I want to die, I'll die right here, right now, fightin' you, if I want to die. You my enemy, not no Chinese, no Vietcong, no Japanese. You my opposer - when I want freedom. You my opposer - when I want justice. You my opposer - when I want equality. Want me to go somewhere and fight for you? You won't even stand up for me right here in America, for my rights and my religious beliefs. You won't even stand up for my right here at home.
Stephen J. Rivele, Christopher Wilkinson, Eric Roth and Michael Mann released Ali - Draft Resistance Speech on Mon Jan 01 2001.