Ariel Dorfman: Ghosts of the past

Stephen Sackur speaks to the acclaimed novelist and playwright Ariel Dorfman. His life has been shaped by political upheaval and exile. He fled Chile after General Pinochet seized power in 1973 and his books were banned and burned. Dorfman’s work explores humankind’s capacity for sin and salvation. Do we have it in us to overcome our worst instincts?