Noncommittal random thought for a holiday

Listening to the career of Julius Caesar on the History of Rome Podcast has me wondering if anybody has done a thorough historical study on the role of what we would today call “propaganda” or even “public relations” in the politics of the ancient world (Caesar was obviously a master of PR and “image management”) and the maintenance of the legitimacy of states. I could probably find one pretty easy on Amazon or something, but um, I don’t really feel like it right now. Happy Memorial Day everybody (I mean, happy Revisionist History Day).