I think I'd stay put. I've got enough guns for me, the wife and some neighbors . . . I think we could make any rioters a lot more interested in some other block or neighborhood.
I am not advocating going after rioters vigilantee style, but I am not about to let a mob get anywhere near my family without firing everything I've got at them.
As for warning shots . . . I dunno, maybe . . . I keep remembering those Korean store owners on the roofs of their stores during the CA/Rodney King riots. One particular piece of footage had something like 6 Koreans on the roof armed with what looked like 28" bbl shotguns shooting it out with the rioters - - that's one heck of a firefight!
America is at that awkward stage. It's too late to work within the system, but too early to shoot the bastards. Claire Wolfe