"The Second Amendment's language and historical and philosophical background demonstrated that it was designed to guarantee individuals the possession of certain kinds of arms for three purposes: (1) crime prevention or what we would today describe as self-defense; (2) national defense; and (3) preservation of individual liberty."

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The Second Amendment is a doomsday provision, one designed for those exceptionally rare circumstances where all other rights have failed - where the government refuses to stand for reelection and silences those who protest; where courts have lost the courage to oppose, or can find no one to enforce their decrees. However improbable these contingencies may seem today, facing them unprepared is a mistake a free people get to make only once.

— Alex Kozinski