Every President has been a Mason. I've assumed that President Trump is, as well.
I believe the first 3 levels are just "bush league" where they scope out the "talent" for the higher levels. There are many flavors? And family connections matter. It definitely comes from the ancient world; pre-Christian.
The place where the shooting was today likely had original non-conformists settle it. Those were rebels against the Church of England and of Rome.
One of the original patsys of the Cabal crime - who did not do the shooting - was Sirhan; who was under the hypnotic spell of some government doctor. Very tragic. The patsys don't do the shooting. Most people here don't seem to realize that. Sometimes they are plain actors; just on a gig; pretending to be insane. No shrink needed in that case.
No medicine will turn you into a shooter. They just have them stand there - someone else does the shooting. Someone qualified.