If you don’t have some preparations in place, think hard about getting some. A few weeks of food and some water will go a long way towards giving you more options than most folks. Even a few flats of cans of beans and a few pounds of rice will go very far, and they buy you the most important thing in a crisis: The time to consider your situation and plan for what is next. Most people will not have that luxury because they are stupid. Don’t be them.
And, if you are smart, a plan for, and the tools to, defend your stash from those folks who are unable or unwilling to plan ahead.