Conspiracy theorists have long suggested that John Lennon's killer-Mark Chapman-was not just some common nut who shot down the revolutionary former member of The Beatles outside his New York apartment in 1980. They suspect he was sent by the U.S. government. Apparently John's son Sean believes it too. He told The New Yorker that his dad “was dangerous to the government. If he had said, 'Bomb the White House tomorrow,' there would have been 10,000 people who would have done it. These pacifist revolutionaries are historically killed by the government. Anybody who thinks that Mark was just some crazy guy who killed my dad for his personal interests, is insane. Or very naive. Or hasn't thought about it clearly. It was in the best interests of the United States to have my dad killed. Definitely.”