I would also like to add that many states are now stockpiling emergency food supplies, and there is obviously many that can view food as a more important issue before guns, so these flash mobs will center attacks upon places that will be storing food, especially food stocks that are more portable, shipping hijacking will be more common.
Even bulk food containers may be hijacked, or held for ransom.
First rule of preparedness, keep the circle of informed small, if neccessary create an image of being in need, try to not stand out as having stocked resources.
I actually plan on saving most food containers and refilling them with material to duplicate weight and feel, especially boxed foods. Create a fake food larder.
As far as the cameras at intersection for facial recognition all it takes is a green laser on a small compact tripod aimed and turned on either manually or by being pre-placed and operated by remote control.
Or disabling them by other means, paintballs? Tinted film on the upper windshield and upper drivers window to conceal facial recognition, the more adoptive use of wearing a hat obviously helps.
Facially-recognize this:
or this
And when they will march on the suburbs! Mommy and kids will be left at home while Metrosexual Dads run away.
Five minutes after they find out they've been duped, they'll be back on your property with a vengence. May want to just give them the real thing but have other caches they don't know about.
Just wearing a Halloween or celebrity mask, or a full facial beard, would kill facial recognition systems.