Muhammad Ali gained fame primarily as a professional boxer. Known for his charismatic personality and remarkable skills inside the ring, he became a cultural icon in the 1960s and 1970s. Ali was a three-time world heavyweight champion and is celebrated for his bouts against prominent opponents like Sonny Liston, Joe Frazier, and George Foreman. Beyond his boxing prowess, Ali was also known for his stance on civil rights and social justice, making him a significant figure both in sports and broader societal movements.