That is a question that may never be answered. President Johnson, who assumed the position after Kennedy’s death, appointed a commission to examine the circumstances of the assassination. Chaired by U.S. Supreme Court Justice Earl Warren, the Warren Commission concluded: “The shots which killed President Kennedy and wounded Governor Connally were fired by Lee Harvey Oswald.” A House Committee in 1979 concluded that there probably was a conspiracy behind the Kennedy assassination, but was “unable to identify the other gunman or the extent of the conspiracy.”

Numerous theories have abounded over the years, including some that maintain that the mafia, the CIA, Fidel Castro, or anti-Vietnamese groups were involved in the plot to kill President Kennedy. Many still don’t believe that Lee Harvey Oswald acted alone.