On Sunday morning, November 24, 1963, during a live television broadcast, Lee Harvey Oswald...

On Sunday morning, November 24, 1963, during a live television broadcast, Lee Harvey Oswald, the accused assassin of President John F. Kennedy, was himself shot and killed in the basement of Dallas Police Department Headquarters, while he was being transferred (in handcuffs) to a more secure holding facility. Who was shown on television as he shot Oswald at point blank range, to the shock of dozens of police and press officials present for the event?