Muhammad Ali was a famous American boxer who was known for his speed, strength, and confidence in the ring. He won a gold medal at the 1960 Olympics and went on to become the world heavyweight champion on three occasions. Ali converted to Islam in 1964 and changed his name from Cassius Clay, which was a bold move at the time. He refused to serve in the Vietnam war due to his religious beliefs and was stripped of his boxing title. Ali later regained his title and continued boxing until 1981. Though he developed Parkinson's disease in his later years, Ali remained a iconic figure who promoted dignity, respect, and peace.