Driving home yesterday I passed ~25 folks demonstrating with Trayvon and Brown signs. There was one very nervous looking city cop. Tampa has one of those protests planned for the GJ release day, but it's not in an area I ever go.
That said, I pulled some mags out of storage and put them on my plate carrier ready to go. I've got a couple ghettos close enough to my neighborhood that any party could conceivably travel. I don't think that's very likely though.