Is Death Penalty Justifiable?

The death penalty has faced much opposition as of late. Can the death penalty possibly be a morally acceptable punishment? A popular bumper sticker says, "We kill people to show people that killing people is wrong." The slogan is short, simple, and to the point. But is there really such irony in capital punishment as the slogan implies?
First of all, the slogan misses an important point. The death penalty does not punish people for killing, but for murder. Killing is justified when it is done in self-defense. Killing means to cause death. Murder, on the other hand, is defined as, "the unla…