The amazing story of the hidden war between two of the United States most violent groups, the Mafia and the Ku Klux Klan. Our story begins at the end of the Civil War when a group of former Confederate soldiers create the Klan. What begins as a social club develops into an organization whose principal aim is to intimidate recently freed slaves. The Klan fades away until it is dramatically reborn in the wake of DW Griffiths’s epochal movie Birth of a Nation. By the early 1920s the Klan has become a huge political movement which uses its muscle to force the government into enacting laws limiting immigration and introducing prohibition. Ironically by making alcohol illegal, the Klan hastens the rise of the American Mafia, the organization that will eventually help destroy it. During the prohibition era, the Mafia organizes itself into a very wealthy organization that easily matches the Klan for violence and intimidation. The KKK reacts by trying to destroy Mafia speakeasies and their bootlegging operations, but they only succeed in the American South. In the 1920s and 1930s, Hollywood joins the fray, producing films that glamourize the Mafia and attack the Klan.