Whenever I hear a libertarian speak a strong visceral reaction occurs, which I believe would be a akin to the one that I would've probably found with the Nazi party, the Communists or a racist Southerner (i.e. listening to an insane ideologue talk).
It's no different to the reaction he probably feels with those who don't share his "grand world view no one understands but it's coming you sheeple" shtick.
It is not bigotry to point out obvious flaws in ridiculous and damaging ideologies - it's merely interesting to note the amount of controversy I appear to have drummed up.
What I find even more interesting is how many libertarians are often atheists, understand science/engineering and try to follow rational paths (this part is their downfall).
Problem is most of their "rational" foundations are just way off - i.e. the world is fair, people will act like you want them too, free markets bring all the good to the world, markets are efficient, private industry doesn't corrupt etc.
This is called cognitive dissonance (http://en.wikipedia.org/wiki/Cognitive_dissonance).
The world is messier than people think it is - and sociopathic platonic ideals should be vehemently defended against.