Muhammad Ali, formerly known as Cassius Clay, was one of the greatest boxers of all time. But Ali was also much more than just a boxer as he served as a Civil Rights Activist in the 1960s.
Ali was born in Louisville, Kentucky and by the time he was 18 years old he was already professionally fighting. He first garnered worldwide attention during the 1960 Olympic Games when he won the gold medal in the light heavyweight division at the age of 18. At the age of 22 he upset former heavyweight champion Sonny Liston for the title of best heavyweight in the world. Ali then went on to defeat Floyd Patterson along with another string of helpless boxers before he was banned from boxing for three years for refusing to serve in the United States military during the Vietnam War (which was due to his battle with dyslexia).
Upon his return Ali regained the world heavyweight title by defeating George Foreman in the widely remembered Rumble In The Jungle in which almost no one gave him a chance at winning.