Troy Davis' execution is nothing to celebrate. The only satisfaction it offers, if any, is the grim kind that comes from knowing a killer got his just deserts.

Of course, to opponents of the death penalty, every execution is an outrage. Davis' supporters say this one is worse: the deliberate state killing of a man despite evidence that he is innocent.

If they're right, Georgia and all of America should be ashamed.

But they're wrong: Troy Davis is guilty.