A universal law in the Aristotelian sense derived from the condition of being human (in contrast to the sources of positive law) that postulates that those who have occupied a particular territory before all others are naturally entitled to that territory; consequently, they have prior claims over it against all interlopers. The concept of citizenship by birth, for instance, derives its legitimacy from this law. As may be surmised, the abrogation of this law is only possible under conditions of violence. The profound and sobering implications of this law can be deduced from the following thought experiment: What if, tomorrow, Native Americans were to acquire the power sufficient to propel them to the headship (in all senses of the word, political, military, etc.) of the Americas? How would citizenship of the present descendants of all those who have migrated into the Americas over the centuries, literally at the point of the gun, be now defined? A taste of the answer—however repugnant it may be to all those who believe in the desirability of a multicultural democracy in that country, and anywhere else for that matter—is to be found today in the ongoing events in Zimbabwe (Will South Africa be next?) where the moral claims to citizenship by its white residents have been proven to have rested all along on armed political power that slipped out of their hands with independence in the 1980s. In other words, regardless of how one wishes to prevaricate on this matter: citizenship in lands that were colonized by Europeans, where the original inhabitants are still present today, ultimately resides in monopoly over power, and not moral claims. (See also the counterpart of this law, the Law of Historical Irreversibility.)