But you can't have 2 sets of rules that get applied according to some arbitrary distinction made at the point of sentencing. Murder vs Really Bad Murder? The system we already have in place can keep people locked up for life if they are deemed to be a significant risk to the public - they just don't get parole.But I presume you're talking about crime in general. When it comes to sick murderers who have flipped out and brutally murdered kids in the way that this guy has then I'm not sure that really applies.
Seems pretty obvious that for that subset of murderers, this guy or people like the Moors murderers, Fred West, Ian Huntley types etc.. then locking them up for a full life sentence to ensure they can never re-offend would be inherently safer than releasing them because we think they've been sufficiently rehabilitated.
I doubt that the question of whether some subset of really disturbing murderers faced full life terms or were eligible for parole has been demonstrated to have any impact on whether or not the likes of those people would have committed their crimes in the first place. However it is rather obvious that letting them out leaves some risk of reoffending that isn't present if we simply keep them locked up for life and frankly, given the nature of these extreme offences, then I don't think the rest of society should necessarily accept that tail risk.
I'm not averse to people spending the rest of their lives in jail. What I am against is some kind of *automatic* full life sentence, and the judgement of "Person has done X they should never be released" as opposed to an approach that assess the risk posed by the individual prisoner at the point they are up for parole. If McGreavy no longer poses a threat, there is nothing to be gained from keeping him in prison - other than the bill for keeping him there (prison is hellishly expensive). Releasing him from prison doesn't undo what he's done. It doesn't mean we've forgiven him and he's our best mate now. It just means "We're confident this person isn't going to murder anyone else". Whilst it's possible to argue that confidence is misplaced, doing so when the only information you have available is gleaned from a short newspaper article is largely futile because you are arguing from a position of ignorance.


