Well, then, you're not arguing properly with me, so I will make my final points.
1. Death Sentences are irreversible and due to systematic injustice a black person might be given the death sentence for a lesser serious crime than a white person.
2. Human Dignity stops us from determining whether someone stops being worthy of living just because they did wrong.
3. If we let bad actions justify death, we are being Vengeful, justice doesn't always make us feel better, while vengeance tends to make us feel better. We gotta recognize the difference between justice and vengeance.