I'm sick of the apologia for these unforgivable criminals. By all means separate them from each other based on circumstances, for their own good, but if you murder people you're unfit to live in society, full stop.
The GP's point, I think, is that "unfit to live in society" doesn't mean "must live in some sort of hell-hole." Prison can just be another, slightly worse society. Like penal colonies were, before we stopped doing those.
