You said it yourself, they aren't going away. The only way to have a semblance of a fix for this situation is to repair all the things the parasite class broke, and that's education, financial security (jobs, wages, and things like single-payer healthcare), and time. That will stop most of the overt destructive hatred from the Right.

This is like the old racists from the South. They won't go away. They exist. They refuse to change unless they're forced to by a family member marrying a minority or something equally life-event changing, and even then it's iffy. What improves things is the next generation to having it better. They get exposed to different people an have a better education, they get the stability and have less opportunity to jump on the racist bogeyman-wagon.

We're not going to fix the current generation. They're broken.

Unfortunately it's going to be hard to fix anything at all with the Dems being witting failures, the Republicans dismantling everything and instituting fascism, and the geopolitics and economics shifting away from the US leaving us in worse condition to build things right.