The Act of Killing (Indonesian: Jagal, lit. 'Butcher') is a 2012 documentary film directed by Joshua Oppenheimer, with Christine Cynn and an anonymous Indonesian co-directing. The film follows individuals who participated in the Indonesian mass killings of 1965–66, wherein alleged communists and people opposed to the New Order regime were tortured and killed, with the killers, many becoming gangsters, still in power throughout the country. The film was mostly filmed in Medan, North Sumatra, following the executioner Anwar Congo and his acquaintances as they, upon Oppenheimer's request, re-enact their killings and talk about their actions openly, also following Congo's psychological journey facing the topic. A co-production between Denmark, Indonesia, Norway, and the United Kingdom, it is presented by Final Cut for Real in Denmark and produced by Signe Byrge Sørensen, with Werner Herzog, Errol Morris, Joram ten Brink and Andre Singer in executive producer roles.