Peter Turchin has an extremely interesting end at least somewhat empirically backed theory of historical cycles. It’s hard to know whether it’s true, but he’s taken seriously by some smart people (recent piece in The Atlantic, Slate Star Codex review of his book). Here’s a recent piece on why current division is likely to get worse, and what we can potentially do about it.
We predicted political upheaval in America in the 2020s. This is why it’s here and what we can do to temper it.