It's not just the part about promoting an opinion that make it propaganda, it's the part about promoting an opinion that a. there is a problem at all, and b. ad

It's not just the part about promoting an opinion that make it propaganda, it's the part about promoting an opinion that a. there is a problem at all, and b. advocating for a particular solution to the problem as defined. A huge part of propaganda is about setting the terms of the debate. Ideally, as George Orwell wisely pointed out, a successful propagandist makes certain opinions seem obvious, common-sensical, and even inevitable, while making other ideas all but literally unthinkable. So next time you read an opinion you disagree with, ask, "what would happen if that opinion were the dominant one in society?"