The Act Of Killing, Joshua Oppenheimer’s exceptionally upsetting new documentary, seems as if it was made on another planet. The Indonesian death squad that was responsible for massive killings between 1965 and 1966 has now grown into Pemuda Panscalia, a celebrated organization that continues to revel in numerous illegal activities. The leaders of this group, most notably a man named Anwar Congo, gleefully agreed to re-enact their murders for Oppenheimer through a series of increasingly surreal movie genre sets. Throughout the film, the killers talk openly about the methods they used in convicting and murdering alleged communists. If this premise sounds unbelievable in writing, just wait until you view the film yourself. It is a remarkable, horrifying and daring piece of filmmaking about confronting and purging the past, and it is now finally getting its due with critics and audiences. The executive producers of the film, appropriately, happen to be Errol Morris and Werner Herzog—two similarly audacious filmmakers. In this video, presented by Vice, the two detail their experience with the film and why they believe it to be so essential and important, providing an enlightening discussion on such a baffling work.