Experts J. Gary Shaw and Brian Edwards believe they have discovered the true identity of the person behind President John F. Kennedy 's assassination—Roscoe White, a former U.S. Marine and Dallas cop . Knewz.com can reveal White is believed to have played a key role in the assassination , especially through his ties to both Lee Harvey Oswald and Jack Ruby. In November 1963, Jack Ruby shot and fatally wounded Lee Harvey Oswald, who was accused of murdering JFK. In 1964, the Warren Commission