The communists know how to take over institutions and turn then into propaganda echo machines. Senator Joseph McCarthy was beginning to uncover all of this in the 1950’s when the establishment took him down. Read “Blacklisted by History”, such an excellent book.
About propaganda, I think you can list it as a weapon of mass destruction because it destroys people’s minds and their liberty and then turns people into human weapons to be used against others, very much as Islam does. They are both cults as was Nazism.
McCarthy hearings - lived it ...