Wow, I write like a college essay question…Sorry.
I think about social unrest a lot. But with recent events in mind, it’s more of a mental exercise for me than a probable scenario to plan for. I still think a massive outbreak or widespread food shortage could lead to some collapse. I imagine small-scale breakdowns will continue from time to time in various places throughout the world forever. The only way I think one can prepare for it (apart from a heavily armed well stocked place in the mountains) is the same thing to do to keep it form happening: befriend your neighbors. Become an active part of your community.