Oh, yes, I know the standard response of the Pentagon, the CIA, and the NSA and its ardent supporters in the Washington, D.C., establishment and the mainstream press. They immediately cry "Conspiracy theory!" whenever anyone points to that particular regime-change operation.
Mind you, they don't cry "Conspiracy theory!" when one brings up other anti-democratic regime-change operations on both sides of the Kennedy one — Iran 1953, Guatemala 1954, Congo 1961, and Chile 1973. It's only with the Kennedy regime-change operation that they cry "Conspiracy theory!"
From the beginning, the official story has been that a lone-nut communist ex-U.S. Marine, with no apparent motive, assassinated the president. Nothing to see here, folks, time to move on — U.S, officials said. Just a plain old ordinary murder case.