On the contrary, libertarianism regards the law as force organized for the common defense and nothing more. [1] The protection of our negative rights is the one essential function of government in the libertarian view.

I've always been curious: how does anarchism reconcile your right not to be harmed with the supposed right of other individuals to do anything they please, including harm you? Do we even have a right not to be harmed? If we do, how is justice served -- can we serve it ourselves, or should it be delegated somehow? Or are these questions "out of scope" and justice is handled on a case-by-case basis that's not prescribed by anarchism?

[1] http://bastiat.org/en/the_law.html