I do not think that necessarily relies on cognitive dissonance. For example, there are plenty of example you can point to of an American conspiracy to overthro

I do not think that necessarily relies on cognitive dissonance. For example, there are plenty of example you can point to of an American conspiracy to overthrow governments, but it is not not cognitive dissonance to believe that a particular American was not involved in it. The only reason that this logic does not apply to Jews is that their is no central hierarchy to Judaism, however it is still possible to believe that there is a shadow organization that is running the world and happens to be Jewish.