Murray Rothbard — American Economist born on March 02, 1926, died on January 07, 1995

Murray Newton Rothbard was an American heterodox economist of the Austrian School, a revisionist historian, and a political theorist whose writings and personal influence played a seminal role in the development of modern libertarianism. Rothbard was the founder and leading theoretician of anarcho-capitalism, a staunch advocate of historical revisionism, and a central figure in the twentieth-century American libertarian movement. He wrote over twenty books on anarchist theory, revisionist history, economics, and other subjects. Rothbard asserted that all services provided by the "monopoly system of the corporate state" could be provided more efficiently by the private sector and wrote that the state is "the organization of robbery systematized and writ large." He called fractional reserve banking a form of fraud and opposed central banking. He categorically opposed all military, political, and economic interventionism in the affairs of other nations. According to his protégé Hans-Hermann Hoppe, "There would be no anarcho-capitalist movement to speak of without Rothbard.".. (wikipedia)

Early economic theory was rooted in the Italian, French, and Spanish traditions, which were subjectivist oriented. Then it shifted onto the terrible path by Smith and Ricardo and the British classical tradition, which is 'objectivist' - values are in inherent in production.
If you wish to know how libertarians regard the State and any of its acts, simply think of the State as a criminal band, and all of the libertarian attitudes will logically fall into place.
It is in war that the State really comes into its own: swelling in power, in number, in pride, in absolute dominion over the economy and the society.
Libertarians regard the state as the Supreme, the eternal, the best organized aggressor against the persons and property of the mass of the public. All states everywhere, whether democratic, dictatorial, or monarchical, whether red, white, blue or brown.
Subjectivism is not an absolute principle; it is a necessary but not sufficient condition for sound methodology.