In medieval England, the King’s peace was “[a] royal subject’s right to be protected from crime (to ‘have peace’) in certain areas subject to the king’s immediate control, such as the king’s palace or highway.” King’s Peace, Black’s Law Dictionary (11th ed. 2019). “The weight of modern authority, in [the United States Supreme Court’s] judgment, establishes the doctrine that when a person, being without fault, and in a place where he has a right to be, is violently assaulted, he may, without retreating, repel force by force, and if, in the reasonable exercise of his right of self-defense, his assailant is killed, he is justifiable.” Beard v. United States, 158 U.S. 550, 562, 15 S. Ct. 962, 966, 39 L. Ed. 1086 (1895).