libertarian in the mid-20th century to advocate laissez-faire capitalism and strong private property rights such as land, infrastructure, and natural resources, left-libertarianism has been used more often to differentiate between the two forms, especially concerning property rights. According to Jennifer Carlson, right-libertarianism is the dominant form of libertarianism in the United States, while left-libertarianism "has become a more predominant aspect of politics in western European democracies over the past three decades." Left-libertarianism also includes "the decentralist who wishes to limit and devolve State power, to the syndicalist who wants to abolish it altogether. It can even encompass the Fabians and the social democrats who wish to socialize the economy but who still see a limited role for the State." According to the textbook definition in The Routledge Companion to Social and Political Philosophy, left-libertarianism has at least three meanings, writing: In its oldest sense, it is a synonym either for anarchism in general or social anarchism in particular. Later it became a term for the left or Konkinite wing of the free-market libertarian movement, and has since come to cover a range of pro-market but anti-capitalist positions, mostly individualist anarchist, including agorism and mutualism, often with an implication of sympathies (such as for radical feminism or the labor movement) not usually shared by anarcho-capitalists. In a third sense it has recently come to be applied to a position combining individual self-ownership with an egalitarian approach to natural resources; most proponents of this position are not anarchists. The Stanford Encyclopedia of Philosophy distinguishes left-libertarianism from right-libertarianism, arguing: Libertarianism is often thought of as 'right-wing' doctrine. This, however, is mistaken for at least two reasons. First, on social—rather than economic—issues, libertarianism tends to be 'left-wing'. It opposes laws that restrict consensual and private sexual relationships between adults (e.g., gay sex, non-marital sex, and deviant sex), laws that restrict drug use, laws that impose religious views or practices on individuals, and compulsory military service. Second, in addition to the better-known version of libertarianism—right-libertarianism—there is also a version known as 'left-libertarianism'. Both endorse full self-ownership, but they differ with respect to the powers agents have to appropriate unappropriated natural resources (land, air, water, etc.). Terminology As a term, left-libertarianism is used by some political analysts, academics, and media sources, especially in the United States, to contrast it with the libertarian philosophy, which is supportive of free-market capitalism and strong private property rights, in addition