In 2008, I was literally one day away from withdrawing every dime I owned from the bank, because I couldn't be sure the bank would survive. A 15% drop in the Dow is nothing like a real crisis.
Your deposit is insured. But sure, participate in panic.
Let's say I need to withdraw my savings for whatever reason next week but my bank goes bust tomorrow. How long will it take before the FDIC insurance pays out?