<human>:  Who was Muhammad Ali?
<bot>: Muhammad Ali was a famous boxer from the USA. He was born in 1942 in Louisville, Kentucky. Ali was the first African American heavyweight champion and he was a popular figure in the United States and throughout the world. He is best known for his charisma, wit, and for his refusal to serve in the Vietnam War. He was stripped of his heavyweight title in 1967 after refusing to be drafted into the US military.