We are social beings who require relationships with others of our species not only to live well, but to survive. As Franz Oppenheimer reminded us, there are only two systems available to provide for our material needs: the economic and the political means. The "economic" means consists of persons voluntarily exchanging their respective claims of ownership on terms they negotiate for themselves; while the "political" means involve the forceful taking of property by the state, without the consent of the owner. The "property principle" is involved in each system, with the "economic" means respecting the inviolability of an owner's claim, while the "political" means disrespects it. The distinction between these two systems is often expressed as the difference between "individualism" and "collectivism." The state is often called upon to impose its realpolitik powers upon individuals who are inconveniences to  the established order.