As someone who was in LA in '92, I can give a little input.
One, as we saw there, the Guard was overwhelmed immediately and would have required at least another week to move enough assets into the area. We (thew active Army and Marines) were ordered to immediately move in and enforce the declaration of martial law. Which we did. As I remember, the only ones that got their rights stepped on, were the doofus gang bangers that took pot shots at us...Up armored HMMWV w M60 machinegun vs lowrider w Tec-9 ..... you do the math!
There, the Gulf Coast, and here in Iraq, we have had no orders respecting hoarding. Privately owned and legal weapons in the US were fine as long as they were in your home or business, regardless of how many. We even let numerous people go with concealed carry with legal permits, or on a case by case basis.
Of course here, we only allow 1 AK per home.

By the way, we hate being there more that you hate us being there, we just want to get back home with as little fuss as possible... intact preferably. We are'nt cops, by a long shot!

Cheers