Property is not only a right, it is the primary difference between humans and animals. Animals make and use tools, at least some of them do. But they do not keep tools, make tools for others, create reusable designs for tools, and maintain ownership of the tools. Anything else animals improve humans do as well, and humans keep their improvements and improve on them further. Ownership of property is the physical fact that separates us from animals. It is a primary right, an aboriginal one, the most ancient of rights, along with the rights to life (self defense) and liberty (the right to move or settle down freely). Stripped of our property we become as animals. Look at any skid row and realize the inhabitants keep all their property around them, because it is the only thing that keeps them human.