Several folks at my place of work are into this. Many of them believe Obama to be a secret Muslim planted in the White House in order to destroy America from within. Others believe he may be the Antichrist.
I'm telling you, unless you live in this kind of environment, you just can't imagine.
At my workplace (I work for the media) it's not quite that bad, since almost everyone here is fairly centrist.
Oklahoma is a bit of an anomaly in that they fairly consistently put Democrats in the State Senate and local governmental positions, but our national representatives and electoral college votes go red every single time with a few exceptions.
Before I mentioned a John Birch Society sign. It's been sort of a fixture around here for a long time. I don't know anything about the guy that has it in his front yard. Anyway he used to live next to a busy intersection (about ten years ago) where a lot of people saw it, but it was little more than a curiosity. It said in large letters "GET US OUT OF THE UNITED NATIONS." I had to see that thing every time I went to my fiancee's house. It didn't bother me that much. Free speech, put whatever the hell you want in your yard. The thing is, even though the guy's moved to a lower traffic area, the JB's have gotten web-savvy since then and now their web URL is right under the sign nowadays.
There's been about three or four additional home-brewed signs popping up in high-traffic areas here and there with the same message. By all accounts it appears that the John Brown Society is picking up members in Oklahoma.
In all honesty, they could be culling together the remnants of the old Tom Metzger W.A.R. organization which used to have a fairly significant presence here. Or it could be otherwise normal folks who've been laid off, are angry as hell and need someone to blame.
The birther and more fringe stuff isn't getting a lot of play on the TV news channels, but on the AM radio call-in show's it's going BALLISTIC.
I am seriously considering changing my voter registration. The GOP isn't the party of Reagan anymore no matter how much they invoke his name. Since "Bull Moose" isn't an option anymore, I've discovered to my absolute amazement that I'm more of a "blue-dog" Democrat.