Consider all the murders who were released after they served their sentences and MURDERED again.
Not to mention how do you punish people already in prison. What is to stop prisoners from having another Attica?
And as for Life in Prison it isnt so.
Many states do to costs nearly always release this monsters later on.
As i wrote before it is NOT a detterent AT ALL. I will explain again.
Once that penality is handed down you have years and years before you will killed. They clog our court systems with BS and drive up costs for the taxpayers.
You want it to be a true deterrent? Death the next day high noon...