National Review slams Norman Mailer here. The guy misses it a little bit: Mailer and Vidal aren't really interested in internal consistancy or making logical arguments. They're interested in taking the War on Terror and using it to bring about a totalitarian revolution in America--in the name of true democracy of course--much as World War did in Russia. In this, they're not too far from 90% of America's college professors and a good slice of the Democratic Party's electorate.
Basically, when fighting the neo-Nazi Left, attacking their arguments is pointless, because deep down they don't really care about them all that much. What we should be attacking is their intention: their desire to overthrow the existing order, and its inherent morality. This is what we should be concentrating on delegitimizing.