You might better look at and to Sigmund Freud's nephew and US citizen Edward Bernays for where Joe and Adolph got their chops.He wrote the actual book on it. They read it and acted upon it. Karl Marx? He had nothing to do with propaganda. He was a social theorist and was on many points correct.
All that said, I can think of no one more striking example of successful  propaganda extant today than what Roger Ailes dishes out on Fox "News". The entire premise of FN was based on turning the US into a goober-consuming "Don't question anything said here" propaganda extravaganza.