A long time ago when I was in high school our English teacher included logic lessons and how to spot propaganda. He wanted us to actually think.
He used two front covers of Time as an example of wordless propaganda. The one with Jimmy Hoffa in it had dark background with Jimmy looking evil. I can’t remember who the “good guy” example was, but he looked like he was about to be taken up into heaven. He was looking up like he was listening directly to God.
It made an impression.