What crimes deserve death penalty?

Must be something illegal right now but doesn't necessarily carry the penalty of death

discuss

I'm not a bleeding liberal pussy but I have to disagree with the death penalty.

1: Death is the easy way out.
2: It could turn up 20 years later that the criminal was innocent or something and he might be needed in finding the real killer.
3: Dead people can't work. Prisoners are a good source of labour, it's utilitarian.