Societies with private property are often described as free societies. Part of what this means is surely that owners are free to use their property as they please; they are not bound by social or political decisions. […] But that cannot be all that is meant, for it would be equally apposite to describe private property as a system of unfreedom, since it necessarily involves the social exclusion of people form resources that others own.

Jeremy Waldron, Property, Stanford Encyclopedia of Philosophy, September 6, 2004