Reportedly John F. Kennedy's favorite movie, "Candidate" basically deals with an obnoxious, rich pretty boy from a well-connected family who goes off to war and returns a hero. The only problem, however, is that he isn't a hero at all ... as it turns out, the entire company was captured by the enemy and brainwashed. In real life, everyone in the company hated the guy, but they were brainwashed into thinking that he saved all of their lives. This was done intentionally to set-up the guy into a prominent position once he came back to the states. He was essentially turned into a "sleeper" who -- once a triggering symbol was activated -- could kill anyone on command.
As irony would have it, the enemy "sold" him to the highest bidder who was none other than his overly-dominate mother. The mother was married to someone who was running for a high political office (whether it was the guy's father or step-father, I forget) and she uses her son to assassinate the other guy running for office.
The only problem, however, is that the character played by Frank Sinatra (who was in the guy's company) figures out that they were all brainwashed and tries to stop the guy from completing his mission.
The movie has turned into cult classic over the years, partlty due to John F. Kennedy's fondness for it (and the similarities between him and the main character) and because it has been pointed to in recent years from all the school shootings -- i.e. the media, video games and music have turned our nation's children into mindless zombie killing machines.