Referred to as left-wing market anarchists or market-oriented left-libertarians, proponents of this approach strongly affirm the classical liberal ideas of self-ownership and free markets while maintaining that taken to their logical conclusions these ideas support anti-capitalist, anti-corporatist, anti-hierarchical and pro-labor positions in economics; anti-imperialism in foreign policy; and thoroughly radical views regarding such cultural issues as gender, sexuality and race. Thus, such critics of "laissez-faire" as commonly understood argues that a truly "laissez-faire" system would be anti-capitalist and socialist. Kevin Carson describes his politics as on "the outer fringes of both free market libertarianism and socialism" and has also been highly critical of intellectual property. Carson has identified the work of Benjamin Tucker, Thomas Hodgskin, Ralph Borsodi, Paul Goodman, Lewis Mumford, Elinor Ostrom, Peter Kropotkin and Ivan Illich as sources of inspiration for his approach to politics and economics. In addition to individualist anarchist Benjamin Tucker's big four monopolies (land, money, tariffs and patents), he argues that the state has also transferred wealth to the wealthy by subsidizing organizational centralization in the form of transportation and communication subsidies. Carson believes that Tucker overlooked this issue due to Tucker's focus on individual market transactions whereas he also focuses on organizational issues. As such, the primary focus of his most recent work has been decentralized manufacturing and the informal and household economies. The theoretical sections of Carson's "Studies in Mutualist Political Economy" are also presented as an attempt to integrate marginalist critiques into the labor theory of value. In response to claims that he uses the term capitalism incorrectly, Carson says he is deliberately choosing to resurrect what he claims to be an old definition of the term in order to "make a point". He claims that "the term 'capitalism,' as it was originally used, did not refer to a free market, but to a type of statist class system in which capitalists controlled the state and the state intervened in the market on their behalf". Carson holds that "capitalism, arising as a new class society directly from the old class society of the Middle Ages, was founded on an act of robbery as massive as the earlier feudal conquest of the land. It has been sustained to the present by continual state intervention to protect its system of privilege without which its survival is unimaginable". Carson argues that in a truly "laissez-faire" system the ability to extract a profit from labor and capital would be negligible.