Oh, that one. Where you asked a whole bunch of questions. It would be best to just ask one or two. Otherwise, it just makes it look like a bunch of rhetorical question that you're not looking for answers to.
In general, there are no definate answers until the time arrives. I doubt the people of Iraq, Venezuela, Argentina, or Libya had answers to those questions until their country collapsed. Then they had to play it by ear. Now, wherever you live, you can learn from history what people did, and can come up with ideas about what people might do in a similar situation. Problem is, too many people still hold to the "It can't happen here!" philosophy, and would end up clueless when the situation is upon them.