Just discovered the existence of large scale armed political extremist groups in the States. Wow. And both left and right wing with any kind of mix of ideologies, too. I wonder how many of them are able to use a computer to find the myriad holes in the world's infrastructure.

Here is a really nice book to give some perspective: End times, by Peter Turchin Best most terrifying birthday present I ever got, I think.

Actually I think I'll put it as a post in and of itself, folks here may like it.