I’ve only known half a dozen or so Libertarians, but the commonality seems to be that I would call all of them ‘pseudo intellectuals’. They’re all a lot dumber than they think they are, and WAY dumber than they try to project.
It’s difficult not to imagine this being the case for a lot of people. I can’t see how to account for all the blustering, red-in-the-face nonsense we saw from the Tea Party without it being largely a racist response. How many of those people were previously Libertarian is harder to say. Whatever it was, we find ourselves today with many people in power from that bloc.