Dallas and Texas law enforcement stood down.
Military intelligence, which is normally enrolled to provide presidential security, stood down.
The FBI stood down.
These elements opened the door to the assassination, but did not have the resources to deliver the shooters and the complicated cover story and witness elimination program that followed.
Corrupt elements of the CIA and their long term friends and colleagues in organized crime did.
And they did it because their very survival was at stake.
After decades of non-investigation by the epically corrupt Herbert Hoover, Robert Kennedy, the president's brother and Attorney General, was going after organize crime full force.
JFK was going after the criminal elements that had taken over the CIA.
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