Look at the history. Shit like this always happens. They rise, then they fall. The world gets right, then gets left. It gets a mess, then it gets stable. Etc etc etc

Edit: the bad part is that it will always come at a great cost. So right now it's the question what the price will be, that we as humanity will have to pay. We can go as far as mass extinction these days. I thought we couldn't go there, as during the cold war we didn't either. But now that I know how close we came, what tiny things there were that prevented it... Right now we have a lot more radical, religious and dumb people in places of power. I don't know man.

But if it doesn't come to that, it will go back to the left but goes too far, then it will go more to the right again but people still remember so it won't go too far right, then people see it doesn't work and chose a more stable left. Then there will be a period of stability, until everything starts to happen all over again. It's our human nature.