#6. John F. Kennedy’s assassination
John F. Kennedy was killed in 1963 in a Dallas motorcade. Who killed Kennedy? Most conspiracy theorists acknowledge that Lee Harvey Oswald shot Kennedy from a book depository. Was there a second assassin, perhaps one at a nearby “grassy knoll”? And if Oswald did act alone, who gave him the orders? Activists against Fidel Castro? Organized crime bosses? A jealous husband upset with Kennedy’s philandering? Though the Warren Commission report concluded that Oswald acted alone, a 1979 report by The House Select Committee on Assassinations suggested that there was in fact a conspiracy, and likely more than one shooter. In such a complex and sensational case, the conspiracy theories will live on.