Things may, however, be starting to change, especially following the release three years ago of Joshua Oppenheimer’s extraordinary documentary film, The Act of Killing. Oppenheimer records, in meticulous and horrifying detail, a group of former death-squad leaders re-enacting the murders they committed – not, at least initially, in any spirit of confession or remorse, but rather to portray themselves as the heroes of a necessary process of national purification.