Stephen Sackur is in Germany to speak to Niklas Frank. His father was Hans Frank, the Governor General of Nazi Occupied Poland during the World War Two. He was convicted of war crimes and crimes against humanity at the Nuremberg trials and executed in 1946. Niklas Frank tells Stephen Sackur he 'despises' his father and does not want Germany to forget the crimes of his father and the legacy of the Nazi era.(Photo: Niklas Frank)