I hope it does not come to violence, but, sadly, in this life, sometimes one has no choice but to be violent. That's why we have military, police, the Second Amendment, Justifiable Homicide, etc. We cannot lose our rights, and we cannot lose our freedoms.

As far as going armed, I have never understood why it was ever tolerated to infringe on the Second Amendment. We clearly have a right to go armed most any time. There may be some small exceptions like when entering private property and security is being provided or on an airplane where a negligent discharge could depressurize the plane. Even then, however, if you reasonably don't trust the security but you have to be there (like to buy groceries), I think the Second Amendment would still apply. On a plane, frangible munitions could be required reasonably.