I keep hearing rumours of "another novel coronavirus" coming out of West Taiwan, and combined with the nonsense surrounding avian influenza, I would not be surprised if similar crisis is manufactured soon, because heaven government forbid we have any peace. Such a thing will be accompanied by a literal revolution, not because people won't put up with the same measures again (FFS, some people are still walking around with masks), but because there are several radical revolutionary groups that have made it abundantly clear that they intend to take advantage of the situation.
Stock up on ammo, better to have it and not need it.
I doubt the next catastrophe used to justify seizing power will be quite the same. I hesitate to guess what it might be. It could be war with Russia, Iran, or China. A re-emergence of Islamic extremist terrorism citing US association with Israel could happen. More fires and global warming accusations over the coming summer could lead to protests and power grabs. And there's no saying what Trump will do economically or what the consequences will be.