it's a certain kind of divisive and derogatory propaganda that's been perpetuated for so long that it's usually unwittingly lodged into people's default mode to get those who aren't on it to feel better than-and robbed by-those who are so that they'll be focused on punching down and forget all about the tax dollars that go toward things like making vassals of sovereign peoples and nations and doing things like actually torturing and killing people all over the world with absolute impunity in a dumb attempt to rule over all there is, etc, etc.
(just a guess)

but yeah most of us don't realize when we're regurgitating shit deliberately designed to deepen the divide between people who otherwise might join forces to make the world better for all