I have been reading alot about the JFK assasination lately, accessing online government depository documents and various publications issued in the 1960s and 1970s (most of which are out of print and can't be found at Barnes and Noble, but can be purchased through Amazon.com).
Contrary to popular belief, the Warren Commission didn't have the final say when it came to analyzing the JFK assassination. Amid great public uproar concerning the accuracy and candor of the Warren Commission, in 1976 the US House of Representatives established the House Select Committee on Assassinations, to re-examine the facts behind the assassinations of President JFK and Martin Luther King, Jr.
The Committee's results, while public record, were never widely publicized. Interestingly, the Committee officially stated that Lee Harvey Oswald didn't act alone, and that yes, there were additional shots fired by an unknown person located at the infamous "grassy knoll." The Committee stated that there WAS, indeed, a 4th shot, as shown by accoustical evidence analysis put forth by the National Academy of Sciences.
Although the Committee was careful to not point fingers at specific organized crime families, foreign governments, local organizations or even US government organizations, they worded their conclusions in a manner that didn't rule-out individual members of said organizations acting together, illicitly, without the approval of the organizations they worked for.
Finally, the Committee Report was highly critical of the FBI and Secret Service, not only for their unusual and aberrant behavior during the day of the assassination (All of the traditional tactics, routines and procedures for Presidential protection, procedures that had been in place for 30 years prior to the assassination and most of which are still in-place today, were oddly abandoned on that day in Dallas), but also for their behavior after the assassination, particularly, the impetuous manner with which they propounded the "single gunman" theory, the speed with which they announced it was Lee Harvey Oswald, their immediate insistence that there was no conspiracy and their ruling-out the existence of any potential accomplices (something that no sensible law enforcement investigation, even in a normal homicide, ever does).
These criticisms extended to the CIA as well. Indeed, the Chief Counsel for the Committee, G. Robert Blakey, accused the CIA of very sketchy behavior throughout the course of the investigation and hearings. At various times, Chief Counsel Blakey issued official complaints to the Justice Department, officially charging the CIA with Obstruction of Justice. Usually such complaints would result in an investigation, but this was one of the rare circumstances in which the DOJ did nothing.
The Committee also stated that the assassination of Martin Luther King was also, probably, the product of a conspiracy, even though only one person served as the gun-man. This makes sense. While James Earl Ray clearly fired the shot that killed Dr. King, other people must have supported him, worked with him and financed him. These things don't happen in a vacuum. Just ask Archduke Franz Ferdinand.
If anybody wants more information, please review this wikipedia article, and the books it cites at the bottom. I also encourage you to obtain a copy of the Committee's report, on Amazon.com. http://www.amazon.com/Final-Report-Select-Committee-Assassinations/dp/0979009960/ref=sr_1_1?ie=UTF8&s=books&qid=1272761126&sr=8-1
I also suggest that you read the book, "Praetorian Guard," (1991, South End Press) by John Stockwell, former CIA Angola Task Force Director (no small job, considering the fact that Angola was a Communist nation, with active Cuban regular and guerilla fighters supporting the dictatorship, all the while fighting a constant low-intensity battles against American and Portugese troops and insurgents).
At the end of the day, I am a little shocked that I hadn't previously heard about this Committee, these hearings and this report. I always thought that the Warren Commission was the end-all, be-all of official pronouncements and analysis concerning the assassination. I guess I was wrong. I had no idea that Congress officially disagreed with the Warren Commission, that it conducted its own investigation and issued its own report that not only contradicted the Warren Commission, but criticized the CIA and FBI of obstruction of justice. This is big news, but we never hear about it, we only hear about the Warren Commission.
This is yet one more example of how we should never be content with conventional thought and conventional opinion, because, most of the time, it is wrong. We should always think, always probe and always ask questions, never being complacent with what others tell us we should think.