Substantially all the opponents of private property in land to-day are either Socialists or disciples of Henry George. In the view of the former, land as well as the other means of production should be owned and managed by the State. Although they are more numerous than the Georgeites, their attack upon private landownership is less conspicuous and less formidable than the propaganda carried on by the Henry George men. The Socialists give most of their attention to the artificial instruments of production, dealing with land only incidentally, implicitly, or occasionally. The followers of Henry George, commonly known as Single Taxers or Single Tax men, defend the private ownership of artificial capital, or capital in the strict economic sense, but desire that the control of the community over the natural means of production should be so far extended as to appropriate for public uses all economic rent. Their criticism of private ownership is not only more prominent than that made by the Socialists, but is based to a much greater extent upon ethical considerations. _Arguments by Socialists_ Indeed, the orthodox or Marxian Socialists are logically debarred by their social philosophy from passing a strictly moral judgment upon property in land. For their theory of economic determinism, or historical materialism, involves the belief that private landownership, like all other social institutions, is a _necessary product_ of economic forces and processes. Hence it is neither morally good nor morally bad. Since neither its existence nor its continuance depends upon the human will, it is entirely devoid of moral quality. It is as unmoral as the succession of the seasons, or the movement of the tides. And it will disappear through the inevitable processes of economic evolution. As expressed by Engels: "The growing perception that existing social institutions are unreasonable and unjust, that reason has become unreason, and right wrong, is only proof that in the modes of production and exchange changes have taken place, with which the social order, adapted to earlier economic conditions, is no longer in keeping."[8]