Paul Simon's Graceland album is one of his greatest achievements - a brilliant fusion of African rhythms and western pop which became a global phenomenon. It also proved hugely controversial, as Simon broke the UN-backed cultural boycott of a country still under the grip of apartheid. Joe Berlinger's film captures Simon's return to South Africa some years on and contrasts the value of individual artistic expression against collective political action as instruments of change. Includes interviews with key anti-apartheid activists of the time and such musical legends as Quincy Jones, Harry Belafonte, Paul McCartney, David Byrne and Peter Gabriel.