Citizenfour is the Oscarwinning third part of Laura Poitras’ trilogy about post-911 America. Poitras had been working on her film for a couple of years, when she started receiving coded emails in January 2013. The anonymous source, Citizen Four, turned out to be Edward Snowden. A gripping documentary thriller by eye witnesses about one of the biggest scandals of the past decade. A scandal that might even be bigger than we realize today.