I recently read:
The Devil’s Chessboard
Allen Dulles, the CIA, and the rise of America’s secret government David Talbot
https://archive.org/details/the-devils-chessboard-allen-d-david-talbot
This centers around JFK and his assassination by the Deep State. In it we see many of the roots of what Trump is dealing with today.
Recommended.
Oh, and Oswald was a patsy.
I believe it. The deep state probably grew like a weed after that point.