I'm likely on the other side of the "gun issue", but I mentioned in another comment on this article that the linked paper reads a lot like survivalist literatur

I'm likely on the other side of the "gun issue", but I mentioned in another comment on this article that the linked paper reads a lot like survivalist literature in the early 90s. There are a lot of interesting parallels, in terms of "us vs. them", the prediction of an impending civilization-altering change, the means through which an individual can prepare for it, etc. I'll say again, the 90s-era survivalists were largely wrong, but they were spot on in some ways. The government really was spying on its own citizens, and there was just enough truth to a lot of their conspiracy theories for them not to be completely laughable in retrospect. I suspect this paper is the same way - it seems likely that there will in fact be a changing global climate over the next century or so, and that populations of cities and perhaps nations will be displaced. As for the collapse of civilization, starvation, water wars, etc.? I find those things extremely unlikely.