Ever see this film?
It's a tale of natural disaster (drought) compounded by man-made ones (war and corruption).
I caught this last night on NetFlix. Some English dialog, but mostly in Chinese with English subtitles.
A work of historical fiction, Back to 1942 seems an excellent portrayal of what can overtake a society when things go really bad. And it should serve as fair warning to those who think government (any government) will be their salvation when it does.