 Muhammad Ali was born Cassius Marcellus Clay Jr. in Louisville, Kentucky, where he grew up and rose to prominence as an amateur boxer, winning several Golden Glove titles and eventually the light heavyweight gold medal in the 1960 Olympics. He turned pro and in 1964 became the heavyweight champion of the world and changed his name to Muhammad Ali. As a member of the Nation of Islam, he spoke out against racism. Ali successfully defended his title until 1967 when he was drafted into the Army. Refusing induction as a conscientious objector, he was arrested and stripped of his title. After almost a four-year absence from boxing, Ali was eventually allowed to fight again and participate in such a legendary bout as the Thrilla in Manila. Ali was crowned Sportsman of the Century by Sports Illustrated and Sports Personality of the Century by the BBC. Celebrating Black History, I'm Megan Triplett.