Muhammad Ali, born Cassius Marcellus Clay, Jr, on anuary 17, 1942.
Gold medalist at the Rome Olympics in 1960.
He refused to serve in the Army during Viet Nam stating:
I ain't got no quarrel with those Vietcong.
No Vietcong ever called me "N*****"
Near the end of 1967, the professional boxing commission took away his title and prohbited from boxing. He was also convicted for refusing induction into the army and sentenced him to five years in prison. Ali appealed the conviction and in late 1971 the US Supreme Court reversed his conviction.
He was the heavyweight champion for an unprecedented third times.
I always liked about Ali was his mouth. He used it to proclaim that he was "the Greatest." He used to get into his opponents heads, mess with their minds. You could say it was how he stayed focused, by trying to un-focus his opposition.
In Ali's case he backed up his mouth with his fists, compiling a record of 56-5, 37 by knock-out.