I don’t think you need propaganda. I think it’s baked into people from birth to feel fear, disgust, etc. I think it’s easy to misattribute those feelings as having an external source, blaming them on the poor, and allowing that to shape their opinions and values. It’s surprising to me that we don’t even have a word for “hatred of the poor” because I think it’s pan-cultural, regardless of whether politicians or the wealthy exploit it or not. (Which of course they do, but they can only universally do so because the bias exists.)