Muhammad Ali was a legendary three-time world heavyweight boxing champion who was crowned Sportsman of the Century in 1999 by Sports Illustrated. He was an extremely important figure in the civil rights movement in the United States, using his talent and wit to draw public awareness to the inequality in American society. He has remained a figure of great influence, commentating on injustices where he sees them. As a testament to Muhammad Ali’s humanitarian work, the United Nations named him a messenger of peace. He was awarded the presidential Medal of Freedom, as well as Amnesty International’s lifetime achievement award. In 2005, he and his wife Lonnie opened the Muhammad Ali centre in Louisville, Kentucky. In retirement, Ali still travels and lends a hand to causes that are important to him.