To promulgate (and what a fun word!) is to broadcast, promote or spread-the-word of an idea or cause (or a person as an idea).
Me: “I just finished watching the TV series of ‘Rome.’ Man, that Augustus Caesar really promulgated his benevolence to the masses.”
Sister-in-law: “Yeah, well the two men he followed [Julius Caesar and Mark Antony] promulgated themselves in other ways to the masses. I don’t think ‘benevolence’ applies, there.