I hear around me lots of angry voices about al-Meghari early release (e.g. look here:Lockerbie Bomber Treated Like a Hero)
Just want to write down few thoughts.
Sadly, whatever you do to this person (IF he committed the crime indeed) won't return the victims from the dead. They don't need any revenge. I do not really believe in Government's compassion (sorry) so I realise that its just a political game. But I also think that compassion can't be inappropriate.
People call for more punishment and I hear them (without realising this) begging for some medieval torture. Imprisonment is a mild torture too, but we need it, first - to show the criminal and everybody else that what he's done, we think, IS a crime, and second, to prevent the criminal from re-offending and endangering more lives. Eight years in prison and terminal illness did that.
Also in any case we never can be sure for 100 per cent if we caught the right person (that's one reason why death penalty is evil). The only possible punishment may be imposed by the persons own conscience.
Absolute justice (from a human hand) is impossible. If somebody killed many people we can't kill him back many times. We only can help him realise what he has done and prevent him from doing this again. And if God would punish us for all our crimes: committed, dreamed or only possible in future... Who would be left?
And also there is another thought: have all mass-murderers been punished "properly"? What about Colonel Paul Tibbets who killed as many as 140,000 people in Hiroshima? "Tibbets expressed no regret regarding the decision to drop the bomb. In a 1975 interview he said: "I sleep clearly every night." You say he followed the orders? The same they say about that Libyan, I'm sure. And what about former terrorists from Northern Ireland?
I think the only way to battle evil is to live with love and compassion. Any anger, calls for revenge, torture and executions only make things worse (here I agree with "Surprised by Hope" by Tom Wright which I am reading at the moment).