Boxer Muhammad Ali was a legendary American professional boxer, philanthropist, and social activist. He is widely regarded as one of the most significant and celebrated sports figures of the 20th century. Ali was born Cassius Marcellus Clay Jr. in Louisville, Kentucky, and began training as an amateur boxer at the age of 12. He went on to become the first and only three-time lineal World Heavyweight Champion. Ali was known for his unique boxing style, which he dubbed 'float like a butterfly, sting like a bee'. He also gained notoriety for his outspokenness and refusal to be silenced in the face of racism and injustice. Ali's legacy continues to live on today, inspiring generations of athletes and activists alike.