This is a very interesting article about JFK being murdered by the shadow government and it has to do specifically with the role of JFK's monetary actions in provoking the attack against him. As you may know, he tried to circumvent the Federal Reserve by issuing US Notes which were non-Fed money.
It also makes the bold claim that all of the Presidential assassinations were actions of the Secret Elite, to use the term originated by Jim Macgregor and Gerry Docherty, that there were really no lone nut assassins; not a one.
I've seen that idea presented before. There was a libertarian writer named Murray Rothbard who was a professor of history and economics at the University of Nevada, Las Vegas. Murray Rothbard went through the list, one by one, explaining how the Elites were behind every Presidential assassination. I believe he thought that even one or two who supposedly died in office of natural causes were really murdered.
Here is the article from humansarefree.com: