That was probably my comment and it was slightly different: the word "propaganda" was the original word for what we now call advertising ("propagate the message"). It was Goebbels becoming "Minister of Propaganda" (yes, minister of advertising) that lead to the change.

Interestingly enough "the guy", Edward Bernays, was Freud's nephew, and he literally wrote the book on the subject, entitled, yes, "Propaganda"