I've always thought of NA as coming to the fore after the nuclear exchange, offering law and order, food, security and protection against raiders, rebuilding etc. etc. In the sorry situation the U.S. is in, I'd think that a lot of people would be quite open to all that.
Naturally, NA would use propaganda to mask their more odious true nature from the general public. I doubt they'd immediately go "RAR! We are teh Aryans!!! We gonna kill all the filthy niggers, jooze, fags, mormons and anyone else we don't like!" They'd be more clever than that, which would make them all the more dangerous. This reminds me of a joke I once read in MAD magazine about the "patriot" who ends up hating about 90% of Americans.
