Two wrongs don't make a right?

As every would-be wiseacre and cracker-barrel philosopher knows, two wrongs don't make a right.

Phooey! The second one is justice and retribution, and therefore not a 'wrong'.

Injuries done to me I must forgive, not because the state says so and not because some psychologist says that resentment is bad for my psyche, but because it is my Christian duty.

But unpunished, unavenged wrongs inflicted on the innocent I cannot forgive, particularly when the perpetrator tries to justify them, or claims that he has "paid his debt to 'society'", whatever 'society' may be.

To forgive such without adequate retribution is to insult the wronged.