I am sure that there are Libertarians who eschew this kind of association with KKK and Stormfront.
I am also certain that when confronted with this conflict, Ron Paul gave lip service to his critics, but then refused to return the contributions made to him by Don Black and others.
At the heart of it all (I suspect) is Paul’s not so thinly veiled anti-Semitism, which he hides from the public behind his paste on eyebrows.
http://www.nbcnews.com/id/22331091/ns/politics-decision_08/t/paul-keeps-donation-white-supremacist/
http://www.motherjones.com/politics/2007/11/ron-paul-refuses-divest-donations-neo-nazis/
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