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Self-Defense And Culpability: Fault Forfeits First, Richard J. Arneson

San Diego Law Review

Under what conditions is it morally permissible to kill someone in order to save your own life—or the life of another who is threatened? There seem to be clear cases. Threatened by an assailant who is trying to kill you for no good reason, you may use lethal force if necessary to save yourself from death or serious injury from the assailant’s attack. Threatened with death in the form of an onrushing runaway truck, you may not save yourself by using a bystander or imposing on a bystander in a way that inflicts severe harm on her. In a justly …