They are all talk. At least, they better hope they are.
http://www.fredoneverything.net/Blowup.shtml
From the above:
It had better not happen, but it could. Any spark could light it. One day the underclass, rioting, may go into white neighborhoods to stomp and burn. They won’t expect resistance, because they have never met it. I don’t think Al and Jesse quite know how many deer guns, how many Weatherbys and .223s sit quietly in closets out here. If a mob comes toward a man’s home, where his wife and children are, the results will be astonishing. The police will immediately polarize, black versus white. So will everybody else. Government will be irrelevant. And the whole country just might blow up.
If that happens, God help us.