I think the point is that you can't stop the amoral nutjobs (awesome term BTW!) by killing them (and their family and friends) either, because that just embitte

I think the point is that you can't stop the amoral nutjobs (awesome term BTW!) by killing them (and their family and friends) either, because that just embitters another generation. Your examples actually illustrate this perfectly - Timothy McVeigh justified his murdering in revenge for the murdering done at Waco; and both the RAF and Brigate Rosse were driven partly by the injustice of former Nazis (those nutjobs really took their amorality seriously!) returning to power. I accept that there are psychopaths who murder for no reason, but luckily for our species they are very rare. All the killing discussed above was triggered by severe injustice including murder - revenge. Our civilised societies are practically defined by their rejection of revenge as a reason for anything, replacing it with either rehabilitation or prevention. "An eye for an eye" is the mark of a primitive society (or person) that doesn't understand positive feedback loops.