Unfortunately that's not always the case. Living in Germany, I've heard and read (good example /de/ subreddit) loads of hate against middle and upper-middle class people. People who are nowhere near close to being rich. This is also a group that's being taxed as much as the actual rich, or in practice even more, because the rich can afford to "optimise" their taxes.

There's a sizeable group of people that just cannot stand someone working hard and reaping the fruits. Again I'm not talking about Lambo-driving, yacht owners but an average doctor, small business owner or an engineer for that matter.

Per the old meme, success breeds jealousy, but unfortunately recently it breeds hate and violence.