I say we tattoo em', then we hang em'and then we kill em'!!
-I say we let em go-
NO!
Remember the story of Cain and his murdered brother? God turned him loose but only after 'marking' him so that everywhere he sent people would know of his sin. I say mark 'em good and turn them loose into the general population. George Carlin had a great bit years ago where he said the judge should sentence a person to death and then say, "OK, you can go now. We'll catch up to you when we're ready to execute you. Have a nice day!"