Libertarian

Samuel Edward Konkin III defined a libertarian as “one who opposes state intervention, i.e., a defender of Liberty.”

Another common definition of a libertarian is an adherent of the non-aggression principle.

Libertarianism is more than a political ideology. It's an ethical philosophy based on the non-aggression principle. However, when it concerns politics, libertarians are divided into two categories: consequentialists and rights-theorists.

Consequentialists believe that limited violations of the non-aggression principle (such as taxation) are acceptable if they optimize liberty. Therefore, they generally support limited government. On the other hand, rights-theorists consistently adhere to the non-aggression principle as a natural law. When it concerns politics, they tend to support Rothbardian market anarchism, or its strategic descendant, agorism.