In fact what everyone should have done is stockpiling gradually over the last couple of weeks. I went grocery shopping today and I only had to buy a few things because I was already prepared when there was still enough in the stores.
Be smart, think about what you need to get by without being able to go to the store for 2 weeks. I see lots of people buying stuff like bread, but you don't wanna eat bread all the time, do you? Also it goes bad pretty quickly. I think most of the bread that has been bought will end up in the dumpster.