What does society gain from keeping this evil POS alive in a prison for the next fifty years?
I like how things were done in the old Soviet Union. The prisoner after sentencing arrives at the prison. He is stripped and handed a folded set of prison issue, then led to the shower. He remains calm and complies. While in the shower room a guard approaches from behind with a small pistol and puts one behind his ear. Done deal. Easy clean up with the water already running.
Perhaps the prisoner noticed the panel on the wall at the floor. If he did he likely figured it was access for the plumbing and thought nothing of it. That's the chute down to the incinerator. Not even so much as a body bag needed and the folded set of prison issue is returned to the shelf for the next time. Justice is served. 
Those sneaky Russians think of everything don't they.----Very practical people,.
However my friend whose family escaped from Russia and headed straight for Israel tells me a different story.
She said that there are few so called Prisons in Russia, In these times anyone who breaks the law is sent to a Phyco Hospital as criminals are considered insane. After a year or so of being tested---Lord knows what that means, they are then sent to slave labor camps , the salt mines????