Na, the days of old school rioting are over whether it be tea party types, or poor black folks. Aside from little flare ups, you probably won't ever see wide scale rioting ever again over social issues. Economic issues? Yes, but social issues, no.
The majority of Americans live pretty well, and no one wants to fuck that up. Our bellies are full with cheap food, and we have more entertainment than we know what to do with. It's not like the old days where people sit, or hang out in the streets with nothing to do but let the anger ruminate.