Muhammad Ali's death: Remembering the boxer's life

Muhammad Ali, the heavyweight boxing legend who fought opponents in the ring and on behalf of social justice outside of it, has died at 74 years old. Bob Costas

Muhammad Ali, the heavyweight boxing legend who fought opponents in the ring and on behalf of social justice outside of it, has died at 74 years old. Bob Costas reflects on the life of one of sport’s most electric, eclectic, influential icons.