The criminal does not expect his prey to fight back. May he never choose you, but, if he does, surprise him.
It is high time for society to stop worrying about the criminal, and to let the criminal start worrying about society. And by "society" I mean you.
That is why our masters in Washington are so anxious to disarm us. They are not afraid of criminals. They are afraid of a populace which cannot be subdued by tyrants.