Should Clifford Boggess have been executed?

In my opinion Clifford Boggess should have been executed.  The reason I say this is because he was a crazy man who committed two murderers.  He killed two people over wanting more money.  His car broke an in order to pay for it he needed money.  He was saving up for college and didn't want to use that money so he went out and killed a guy who he knew had cash.  He stabbed a 86 year old guy who had no way to defend himself.  His brother who has too live the rest of his life without him because a guy was selfish and needed money.  On top of that he killed another guy after he ran out of money.  He also told his friend that if she told anyone about the murderers she to would be killed.  The way he murdered these people was horrible.  After watching the doucmentury about him I dont think he changed.  He made some art work  exppersing his feeling, but he murdered two people and we must keep murderers of the street.