More than any previous age, the twentieth century has been characterised by political uprisings - from the civil rights campaigns of African Americans to the anti-apartheid movement in South Africa. This film documents the music associated with the great struggles and resistance movements of the twentieth century with contributions from Tom Waits, Hugh Masekela, Elvis Costello, Pete Seeger, June Tabor, Bernice Johnson Reagon, Dick Gaughan and U2.