If James von Brunn weren't in a locked security ward at Southeast General Hospital in Washington, D.C., and awaiting trial for the murder of a security guard at the U.S. Holocaust Memorial Museum, the 88-year-old racist and neo-Nazi might have taken comfort from listening to Lou Dobbs' syndicated radio show or watching Dobbs on CNN in recent days.

If James von Brunn weren't in a locked security ward at Southeast General Hospital in Washington, D.C., and awaiting trial for the murder of a security guard at the U.S. Holocaust Memorial Museum, the 88-year-old racist and neo-Nazi might have taken comfort from listening to Lou Dobbs' syndicated radio show or watching Dobbs on CNN in recent days. Von Brunn would have likely felt some sense of affirmation from Dobbs, as the host began belatedly championing the cause of so-called “birthers,” the angry band of right-wing conspiracy theorists who claim President Obama has not released a valid birth certificate and, in some cases, flat-out assert that he was not born in America and therefore is ineligible to be president of the United States. (Here's a good birther primer; here's the official right-wing defense of birthers.)

Had von Brunn been listening, Dobbs would likely have “spoken” to him. Just a few months before opening fire at the museum, von Brunn, apparently a proud birther himself, had done his best to spread the word online about Obama's illegitimate rule: “What is going on??? WHERE ARE THE GOOD PEOPLE IN THIS COUNTRY - ARE YOU OUT THERE???”

Ranting online, von Brunn also denounced the “dishonest & conspiratorial Media” for ignoring the blockbuster birther story.

Then suddenly up popped Dobbs, who, again and again in recent days, has propped up the birthers and taken on all comers who dared dismiss claims that Obama has failed to prove his U.S. citizenship. Suddenly, for dedicated birthers like von Brunn, the rudderless movement had a willing mainstream spokesman, somebody who reached beyond the paranoid confines of WorldNetDaily and Newsmax or the Michael Savage show and branched out into the masses.

Suddenly, the birthers had media big shot Lou Dobbs onboard as he, at times, turned his radio and television programs into a birther paradise, floating the same loaded, fact-free assertions that conspiracy theorists had been making for nearly a year:

• “But we're going to keep talking about this until we get some straight answers.”

• “What is the deal here? I'm starting to think we have a -- we have a document issue.”

• “And all we need here is a doggone document, but for some reason the president doesn't want to release that.”

• “There are real questions here that need to be answered.”

Dobbs has certainly taken some heat for his recent birther turn. (He's “effectively destroying his career with this stuff,” birther expert David Weigel wrote at The Washington Independent.) But there's more to this story than Dobbs. And the phenomenon in play isn't just about a birth certificate. And it's also not isolated or accidental.

Because, yes, viewed in a vacuum, the movement seems like the nutty fringe. But viewed in a larger historical context, birthers share obvious ties to traditional right-wing assaults on previous Democrats, and birthers have all the marks of a GOP Noise Machine creation. The movement is about a larger, more sinister attempt to paint Obama as illegitimate, foreign, and suspect (i.e. not like you and me). To portray him as “a gratuitous interloper,” as radio host G. Gordon Liddy put it. As someone who isn't who he says he is. As -- let's face it -- the Manchurian Candidate, with all the evil connotations that come with it. (“WHO SENT YOU???” von Brunn demanded to know of Obama.)

And it's about the disturbing role media figures like Dobbs play when they act as the bridge -- as the transmitter -- between the radical and the mainstream. When they legitimize the craziness, if only in the eyes of the crazies themselves. As MSNBC's Rachel Maddow noted this week, “The home run for conspiracists of any stripe is when their ideas can leave the lunatic fringe and enter the mainstream.”

Fox News has been doing that practically since Inauguration Day, as its hosts have mainstreamed a violent brand of militia rhetoric, beseeching viewers to take to the streets against the new president, who is committed to (purposefully!) destroying the country while robbing Americans of their cherished rights. Fox News has served as a clearinghouse and given radicals a way to interact with everyday viewers.

The birther attack is simply a parallel attempt to delegitimize Obama. Because once a public figure has been delegitimized, if only in the eyes of his critics, then all bets are off and the normal rules of conduct are discarded. We saw that play out during the Clinton years, with the immediate right-wing push to paint his presidency as being illegitimate (He won only 43 percent of the vote!), which then morphed into darker conspiracies (see: Vince Foster). And soon, it wasn't Clinton's politics or policies that attracted the venom, it was the man himself. He was untrustworthy. He wasn't morally grounded. He was a monster who had to be removed from office.

The same assault is being waged in the conservative media with deeply personal attacks against Obama. (He's a Marxist!) Fox News has been willingly dumping that toxic stew into the mainstream for months. And now on CNN, Dobbs is busy mainstreaming a distinct brand of hate and contempt by embracing the birther nonsense.

And make no mistake, Dobbs' performance in recent days has been nothing short of shocking. His birther cheerleading would be the equivalent of a CNN host, one year after the fact, going on the air and suggesting the Bush administration needed to prove, once and for all, that it was not behind the terrorist attacks of September 11 (“There are real questions here that need to be answered”). Of course, that kind of reckless rhetoric would be inconceivable on a mainstream television outlet. But Dobbs was not similarly constrained by reason, taking to the CNN airwaves in order to prop up one of the most thoroughly debunked campaign conspiracy theories in history. (“It's crazy,” Janice Okubo, director of communications for the Hawaii Department of Health, recently told Weigel for a birther story. “I don't think anything is ever going to satisfy them.”)

Indeed, here's how transparently loony the whole thing is. There's not only the Hawaii birth certificate that marks Obama's birth (although birthers claim it's a forgery). There are also the real-time, 1961 birth announcements printed up in The Honolulu Advertiser and the Honolulu Star-Bulletin. As Gawker's Cajun Boy recently noted:

I can sort of maybe understand the argument that official documents like birth certificates can be forged to cover something up, but what explanation do the “birthers” have for this piece of historical newsprint, something that's been preserved on microfiche for years now? I mean, in order to discount this you'd have to make the argument that Obama's family planted this item in the paper almost 50 years ago just in case he was to someday run for president. It's just all so ridiculously nonsensical.

Let's just agree that the word “debunked” was invented for situations just like this. Yet Dobbs has decided to hold out hope for the Obama crazies in their endless quest to delegitimize another Democratic president.