/////Oh. Now I get it.
10 Year old kills 6 year old. Found guilty (No doubts)
The sentence....
You will go to jail, and on your 18th birthday, we'll hang you.
That's really nice./////

Like the other fellow, you're oversimplifying so that your own views make sense, which they don't in the real world.

This particular murder was savage, it was beyond two kids not knowing what they were doing to this boy. The atrocities unleashed on him demonstrates that they knew precisely how badly they were hurting him and wanted it to hurt him in the worst way. It was a murder of the type where it is plain the perpetrators are extremely dangerous individuals--psychopaths of worst type. Psychopaths cannot be rehabilitated.

And it's not so much that they received virtually no punishment at all for what they did, it's that they were unleashed back on society with new, secret identities unwatched, unsupervised as though they matter more than decent people who didn't do what they did. Because the "civilized British society" holds its murderers in higher esteeem than innocent people as the Calvert episode demonstrates. It's what you believe and it's what Jim Carroll believes---sadistic killers are more valuable to society than decent people and if anyone disagrees and thinks they shoudl be eliminated so that they can't damage society any worse than they have already done then they are obviously not civilized.

You moralistic cowards. Afraid to do what's right because when it's all said and done, what you're really you're afraid of is that some big, bad god up in heaven will be mad at you. And it really is as simple as that.