I looked up the affected riot area of LA....it's just 1 square mile. Yep, that's it.
Total size of LA? 500 square miles for the core city itself.
Greater LA? 4,000 square miles.
If I were a riot guy?
Well...I'd be worried....the Marines might bring in their recon air assets, and monitor enough of the 1-sq mile.....to bring in secondary forces, and start taking possession of folks from the rear. This isn't 1975....the 'boys' have toys.
Riot folks grasping any of this? I serious doubt it.
1 sq mile just isn't that big of an area.