What you term “a broader cultural movement of generalised hate” is just a reflection of people’s dissatisfaction and fear regarding the state of the world. They’re seeing wages stagnate and prices go up. They hear news about how well the stock market is doing, but they don’t see any of those benefits. They see their politicians spend money on war and destruction but refuse to spend money on social programs. At the same time, the rise of the Internet paradoxically makes it both easier and harder for people to question the narratives they’ve been taught. Amidst all this confusion and worry, is there any wonder people are dissatisfied and looking for someone or something to blame?

Did people act like this in the 70s too when we had stagflation, mass unemployment, gas rationing, Vietnam, Nixon, etc. to contend with? I ask that sincerely because I wasn't around then. The US got a ton of cool music and cinema during that decade (disco and soft rock excepted) but the rest of it sounds even worse than things are now.