Re: The Ron Paul Flap – Short Version
However, if I remember right, he tried to argue that racism isn’t really congruent with libertarianism because it violates the NAP somehow.
This is certainly not Roderick Long’s position.
His position is that racism is (1) objectionable in its own right (as irrational and collectivist), and also (2) objectionable from a libertarian standpoint. (1) is a good enough reason to criticize racism; something doesn’t have to be criminal for it to be open to criticism as foolish or vicious. But he also argues (2), not because racism per se violates the nonaggression principle, but rather because of tensions between the two on levels other than that of logical entailment.
Specifically, Long thinks that racist collectivism tends to interfere with the correct application of the non-aggression principle, that racist ideology will tend to causally undermine the implementation of libertarianism in the real world, and also that racism is logically incompatible with the broader underlying principles that justify the libertarian theory of justice. So the claim is that a libertarian could be a nonviolent racist without being inconsistent; but she could not do so reasonably, which is something different.
For details, cf. Politics Against Politics, in both the post and in the comments.
Anticopyright.