My guess is the cops, at least a large majority, from big cities and urban areas will turn into Nazis when told to do so. They did so in New Orleans.
Now the rural deputies and small town cops might be a different bunch. I hope so.
The army issues and uses a large number of handguns. Issue settled. Handguns are not the best weapons for offense therefore citizens should all be armed with the best rifles and shotguns they can afford.
I recall a magazine article about my late wife’s ancestors in Texas. It told of one sharp fight with commanhes and several brushes with them. When they headed into Indian territory the army gave them several Spencer rifles and a pile of ammo. All for free. What a change from now where we are destroying all surplus guns as fast as possible. This under Bush and Obama.
Actually, the videos that I saw, showed them joining the rest of the thieves.