Nonononononono, you guys are missing the big picture here.
People like David Duke are valuable parts of society. Not because they, themselves, have any value-- Duke himself is worth less than a truckload of dead rats in a tampon factory-- but because they serve two functions:
1) They illustrate freedom, and sometimes enforce it. The KKK once sued to be allowed to stage a White Pride Parade or something like that, and won. The victory was real-- an unwanted, as it turns out. Their entire purpose was to say that we are NOT a free society. They wanted to create a precedent of censorship that they (or their more "repectable" comrades) could then cite when trying to get civil rights marches & gay pride type events shut down. Same for the KKK Adopt-a-Highway program. The parade never took place, even though they won, and not one Klansman ever picked up so much as a candy wrapper off that stretch of highway. The entire point was to get people to say it's okay to discriminate against the unpopular.
2) They allow bad ideas to get exposed to daylight, which is the surest way to kill them.
Duke himself is a criminal-- when he was running his campaign, he got a huge mailing list of White People (the sort who find it necessary to capitalise both words) to send campaign info, and then he sold it to other White Poobahs. Then, finding himself broke, he sent out a plea to the same list for donation, claiming he was about to blow his mortgage. The truth was that he'd sold the house for a tidy profit, and just wanted more money. He went to jail for that one. He brings to this conference his taint.
Same for this Iranian thug. The fact that he's showing his true colors in public is a good thing. Much better than him being publically human and a private despot with genocidal intentions. Would you rather a poisonous snake look like a harmless snake until it bites you? Now his people (who like him less than we like Bush) know who he is too.
Any attempt to shut these people up would be counterproductive. Not only would it give them credibility, but it would rob the rest of the world of the safety that comes from knowing who the Bad People are.
And before I come across as Anti-White-- I'm a cracker from Alabama. We had a lot of such thugs running around, and they were easy to spot, so the rest of us Decent White Folk could avoid them.
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"And if I had the choice, I'd take the voice I got, 'cause it was hard to find..."
--Johnette Napolitano