" . . . the fifth and last auxiliary right of the subject . . . is that of having arms for their defence, suitable to their condition and degree, and such as are allowed by law . . . is indeed a public allowance, under due restrictions, of the natural right of resistance and self-preservation, when the sanctions of society and laws are found insufficient to restrain the violence of oppression." -- William Blackstone, Commentaries on the Laws of England *143-*144 (1765)