In the light of the recent sentencing of David Irving, is there still a philosophical - and perhaps general - importance of 'free speech' and the free exchange of ideas, or must we draw limits on what can be said and how it can be said?

When it comes to the case of David Irving, I find myself in complete agreement with the NYU philosopher David Velleman, who argues on his blog that Irving's conviction and coerced confession are a disaster. Together they create the distinct impression that Irving recanted only in order to reduce his sentence. How else are we to explain his sudden change of mind? It is certainly doubtful that, since his arrest, he has come across decisive evidence of which he had previously been unaware. This is a terrible outcome for those who want to preserve the memory of the Holocaust. As Velleman succinctly argues, "Irving's forced confession of error does more to undermine belief inthe Holocaust than his previous denials, by lending color to suspicionsthat the consensus among historians of the period is the product ofcoercion. The memory of the Holocaust can easily withstand the denialsof someone like Mr. Irving, but only if the refusal of historians toagree with him is clearly due to the force of evidence...