We do not ban all white nationalists simply because they are white nationalists. Klanman stuck around for quite some time, and had a GD thread about those lazy blacks on welfare (paraphrased). We have not had very good experiences with them, though; generally they are semi-literate trolls and Klanman himself snuck back in after his banning in violation of our rules. Kulkulkon’s thread went to over a hundred posts, and it was a mess of ignored arguments on his part and “cites” that were only broken links. Not exactly a shining star of a Great Debate, but he wasn’t banned until we realized the SF connection.
When we had a sudden influx of racist posts and found the storm front thread, we did not particuarly react with unmitigated delight to the prospect of a mass spamming of our board by racist posts. Somehow I doubt No. 1965 really intended to seriously debate the seven threads of regurgitated articles he posted within one hour. Or that AllJewsToTheGasChamber’s lovely post about "frag"ging us and our “kosher brethren” and promise to come back after banning and spam us more was just an innocent newbie’s faltering missteps. We’ve seen pretty consistent bad behavior and rule breaking from the SF crowd, and we’re not inclined to let them all pour into our boards and piss all over our forums while we patiently try to separate the wheat (assuming there is any) from the chaff. I say, ban 'em all and let Cecil sort them out. 
We have had racist posters before, I’m sure we do now, we will again. They will get banned if they are too much of a jerk, and yes, calling people “kikes”, “mud people” and “faggots” counts as jerky in my book. I sure as hell don’t want it in my forum. Being a racist is not an automatic ban, but being a stupid jerk is, and if there are a bunch of literate, courteous, intelligent racists out there, they sure haven’t been very evident.
We don’t allow links to racist sites like we don’t allow links to porno sites. Perhaps a person really thinks they need to link to a mpeg of Debbie Does Dallas, or to a site that urges killing all Jews/faggots/wetbacks, in order to make their debate point. Tough. Find the info you are citing in a more acceptable format. And frankly we don’t have the time to exhaustively analyze every racist site linked to determine the exact degree of hatred/violence shown, so we’re going to err on the side of caution.
If y’all want to debate racists, I am sure you know how to fnd the urls for a whole nest of 'em. If racists happen to wander in here, they can stay as long as they are non-jerkish and not overly offensive and stupid. However, since right now we do not want a mass invasion (as the SFs have implied they have done to other sites), or people who have already shown they disrespect our rules, or post just to stir things up, or a bunch of spam-posts with no intention of debate, and our experience with SF posters has not been all that pleasant so far, we’re opting to lock down all blatant SF posters immediately.
Hope that helps clear things up.