Lee Harvey Oswald, the alleged assassin of President John F. Kennedy, is escorted into Dallas police headquarters in this November 1963 photo. Oswald was charged with killing the President and Officer J.D. Tippit. He had defected to Russia where he had married a Russian woman, and his marriage was coming apart. The Warren Commission concluded that on April 10, 1963, Oswald attempted to kill retired U.S. Major General Edwin Walker, and that he acted alone in the Kennedy assassination. (AP Photo)