I am a libertarian - in the classical sense, not the American sense. I believe power should be decentralised to the lowest possible unit, with minimum interference in anybody's life.
I'm not an anarchist though. I do not believe you can be completely lawless, I just think communities should make their own laws. If you're racist (as an example, I'm not suggesting anyone is), and you want all the foreigners out, if we live in small autonomous communities, that's fine - because they probably don't want to live with you either, and they can come and live with me a mile down the road instead...and I can ban you in return.
I believe there should be minimal frameworks tying communities together, but they should be closer to international agreements, like the geneva convention, and the magna carta than the lumbering behemoth of national laws - the important part here is that the communities sign up for these of their own volition, rather than having them imposed from above.
The exact nature of these laws is closer to a thousand page thesis than a forum post, and depends on how autonomous communities are formed, what size they are and so on, but a summary is "you should never be able to make a law for a community you don't personally interact with on a regular basis".