The gun most likely to harm you is your own. Either through an accident, or a family member or friend using it (possibly carelessly). You are not going to fight off any mobs with the one gun you can fit in your sweaty hands.
There will be no fascist takeover, mainly because the average American will never allow it. Our economy is so interconnected that it can be disrupted by a minor issue (remember the “supply chain” thing?).
If there was some “fascist mobs” taking over some government buildings or voting booths or whatever, people would definitely slow down at work. Many wouldn’t even show up. A slowdown of the economy is the last thing rich people want. Guess who politicians listen to?