Joker wears the helmet with “BORN TO KILL” and the peace ☮️ button as a statement about “the duality of man.” Joker wears the helmet with ‘BORN TO KILL’ and the peace button as a statement about ‘the duality of man.'” According to Deadline, Warner Bros., which is responsible for Full Metal Jacket‘s distribution in the United States, has requested that Amazon return the poster to its original state, “Born to Kill” included.