While maintaining full respect for personal property, socialist left-libertarians are opposed to capitalism and the private ownership of the means of production. Other left-libertarians are skeptical of, or fully against, private ownership of natural resources, arguing in contrast to right-libertarians that neither claiming nor mixing one's labor with natural resources is enough to generate full private property rights and maintain that natural resources should be held in an egalitarian manner, either unowned or owned collectively. Those left-libertarians who are more lenient towards private property support different property norms and theories such as usufruct, or under the condition that recompense is offered to the local or even global community such as the Steiner–Vallentyne school.