Thus making it easier for cops to protect themselves against threats For awhile there, cop-hating liberals and libertarians had themselves a loophole that made it easier to come down on cops who used force in self-defense. According to the so-called “provocation doctrine,” if police had made their way into a situation without satisfying every legal technicality (such as entering a home without a warrant), then they were not necessarily allowed to use deadly force to defend themselves even if another party threatened them with deadly force. In the case in question, police had indeed entered a home without a warrant...