Lee Harvey Oswald himself was assassinated as he was being transferred from one jail to another a few days after the shooting by Jack Ruby. Ruby was a narcotics dealer and a government and Dallas police informant from 1946-1947 who gave information on supposed Communists and Cuban activities in return for the authorities ignoring his ties to organized crime and drug dealing. Some believe that the CIA and the FBI allowed President Kennedy’s real killers to go free because of their links to the government and knowledge of illegal activities within both bureaus.

There is also the case of the mysterious "Umbrella Man" and his companion, both of whom were among the closest to President Kennedy when the assassination occured. The fact that they remained calm and held an umbrella is viewed by many to be a signal to the shooters that the President had not been killed and more shots were required. How does this pertain to CIA involvement? There are those that believe the symbol of the umbrella was indicative of President Kennedy's refusal to support an "umbrella" air support policy to the invaders during the Bay of Pigs incident. The theory goes that these men were Anti-Castro Cubans in league with members of the CIA who were angry with the President for his air support veto.

The "evidence" behind theories of law enforcement bureau involvement is to be found everywhere from the Internet, which is a Mecca for conspiracy believers, to the movies as in Oliver Stone’s film JFK that succeeded in getting a resolution passed to open up more files for public viewing in the National Archives in 1992. However, so much evidence has been lost or misplaced and so many of the key figures alive on that day in Dallas have since disappeared in both natural and unnatural ways, that it is next to impossible to discern what really happened on November 22, 1963. It is possible to look at the circumstances surrounding the shooting and make a judgment based on the available evidence.

It would be hard to believe, as the Warren Commission would have everyone think that one shooter killed John Kennedy with one bullet based on ballistics and other provided evidence, but if Lee Harvey Oswald did not kill Kennedy alone, then who helped him? Was Oswald involved with the CIA and the FBI in an underhanded attempt to gain information on the Russians, or Cubans, or Mafia that failed and so they set him up to take the fall for President Kennedy’s assassination? Oswald claimed he was on another floor entirely eating lunch at the time President Kennedy was shot, and there were witnesses to back him up. When the blame is placed on others besides Oswald, it opens up a new can of worms for everyone involved in a time of Communist hatred and intense fear for any "subversive" actions that might be taken. There was even research done that blamed Lyndon B. Johnson and J. Edgar Hoover plotted together to kill Kennedy and rise to power in such a manner.

 Another possible connection is between the Mafia and the CIA. There have been numerous theories that encompass the whole JFK assassination. One of these is that the Mafia was involved. This theory is very possible due to the fact that the President and his brother Senator Robert Kennedy were making a much more aggressive stance on organized crime than had Presidents which preceded him. It is also well known that the Mobsters didn’t like the president’s brother due to his probes into supposed racketeering. This theory isn’t nearly as strong as the others however what is certain is this: The mob themselves clearly had the resources and motive to kill the President. If they were to end Kennedy's life, perhaps the investigations that were being conducted by his brother would end abruptly and permanently. However it is very unlikely due to the fact that they really had no ties to the accused assassin Oswald and that over the last 30 years their silence has been kept about the incident.

After careful analysis and interpretations of numerous different documents, we feel that while Oswald certainly had a part in the controversy, it is unknown exactly what his role was in the FBI and CIA, or what role the two agencies played overall. The FBI and the CIA were the two primary sources to release all information, in fact the only sources with control over the investigation, thus making them the most able to cover up any wrongdoing or information that would potray them in a negative light. The FBI and CIA knew of the potential consequences of any possible involvement in such an act, and therefore acted in ways, that while it is hard to connect all of the evidence, are certainly carry underhanded connotations.

The question then comes down to how does this pertain to historiography and the development of analyses. There are such a multitude of questions, disputed facts, exaggerations and interpretations surrounding the Kennedy assassination that it is almost impossible for anyone, including the researcher, to make an informed opinion without another piece of evidence coming up to contradict said opinion. It is the job of the historian to look at the hard evidence as closely as possible and make interpretations in keeping with whatever amount of "truth" he or she may be able to find.