Cassius Clay was an American professional boxer who impressed international championships. In the mid 1960s, ‘The Greatest’ joined the Nation of Islam and changed his name to Muhammad Ali which led to a controversial yet popular public image. A magnetic and charismatic figure, the champion dared to speak openly about his religious and political beliefs and perfectly controlled his appearances, embracing a certain idea of racial pride. When at the end of the 1960s, he was called upon to fight in the Vietnam War, Muhammad Ali affronted his biggest opponent Uncle Sam. Refusing to enroll (and succeeding in doing so), the boxer became an icon for the early 1970s counterculture generation while the government’s most prominent national villain. Returning as a hero thanks to phenomenal boxing championships during the 1970s, the boxer who could "float like a butterfly and sting like a bee" has now become, his body limited by Parkinson's disease, one of the most admired and beloved men on the planet.