[donquixote99]

Ninja, that's a gentle, humane thought. I respect it as such. I don't rate this increment of distress very high, however, compared to many other considerations. For one thing, the family of the murdered victims may be the sort that long for vengence, and will be distressed if Duncan is kept alive. I don't share such feelings, but I empathize. I think I'd give these feelings more consideration than the distress of bereavement of Duncan's family.

What I won't do is tolerate the execution of the innocent. That is a harm far beyond the distressed feelings of any side in this. And I believe any system capable of executing Duncan will execute innocent people from time to time.