I think the Rodney King riots are a more realistic representation of what would happen. Under-reported, but very well remembered locally, were private businesses protecting their property from looters. Safe zones were created as business owners put riflemen atop their businesses, and the looters decided to head towards easier targets.
Police protection was..non-existent. Emergency services, including firefighters, outright stated where people could go to meet up with them, but that they weren't entering any of the uncontrolled areas.
Will that happen again? I'm sure it will. I think it will be less 'patriots vs authority' and more 'citizens restoring authority' when the SHTF.
Point well taken; something that may become very pertinet in the not so distant future. Upon reflection, I could have more concisely stated my thought as such:
“Whether I am fighting for the forces of good, or propping up an evil empire, if I am a cop, and you throw a fire bomb at me, never mind actually setting me on fire, my first reaction is going to be to shoot you and all your friends that are standing next to you.”
Again, much restraint on their part.