Harold George "Harry" Belafonte, Jr. (originally Belafonete; born March 1, 1927) is an American musician, actor and social activist. One of the most successful pop singers in history, he was dubbed the "King of Calypso (Calypso music)," a title which he was very reluctant to accept (according to the documentary Calypso Dreams) for popularizing the Caribbean musical style with an international audience in the 1950s. Belafonte is perhaps best known for singing the "Banana Boat Song (Day-O (The Banana Boat Song))," with its signature lyric "Day-O." Throughout his career, he has been an advocate for civil rights and humanitarian causes. He was a vocal critic of the policies of the George W. Bush Administration (Presidency of George W. Bush).