Earlier quoted context omitted.
Before the JFK assassination, 'conspiracy theory' literally meant a theory about a criminal conspiracy. In the case of the JFK assassination, all theories that were counter to the official lone-wolf theory were conspiracy theories, theories about multiple people being involved in the assassination are categorically conspiracy theories while a lone-wolf theory involves no conspiring. Due to this, the term 'conspiracy…
Have you read CIA 1035 960? https://archive.org/details/CIADOC1035960/mode/1up
This part got an audible "Heh" out of me though: "Note that Robert Kennedy, Attorney General at the time and John F. Kennedy's brother, would be the last man to overlook or conceal any conspiracy." Robert Kennedy was murdered one year after this document was written, while running for president. Suppose he secretly doubted the Warren Commission's report (as has been claimed by some of the people close to him, but disputed by others), becoming president would have given him a uniquely privileged position from which to assail it.