Today in 1963, President John F Kennedy was assassinated by a gunman in Dallas, while the presidential motorcade was travelling through the main business area of the city.  A little under an hour after the shooting, a policeman approached Lee Harvey Oswald, believing he recognised his description.  The policeman was shot dead. Oswald was arrested almost immediately under suspicion of murder.  Shortly afterwards, he was also charged with the assassination of President Kennedy.
The suspect was never tried because he was shot dead himself two days later by nightclub owner Jack Ruby.

The Warren Report, commissioned to investigate the president's death, concluded he had been killed by shots fired by Oswald from the School Book Depository building.  But conspiracy enthusiasts quickly turned the assassination into one of the most disputed events in modern history, with theories ranging from claims that it was an elaborately staged suicide to the driver being the murderer.