I think you were going very well until right at the end there; I have to take issue with your last sentence. The parents indeed accrue moral responsibility, but
not for the murder. I propose we partition the event into two separate crimes.
- The gross dereliction of parental duty inherent to using one’s children as pawns in a game of LandTheft.
- The brutal murder of a whole family.
The parents are entirely culpable for 1, but not at all culpable for 2. The Palestinian
in question are entirely responsible for 2, but not at all responsible for 1. Some support for this idea comes when we reflect on the fact that many settler families commit 1, but through sheer luck are not murdered. The fact they ended up dead in this case does not make the parents any guiltier of anything. They did the precise same thing as the luckier settlers. It took a completely different moral agent and his/her personal decision to butcher them for them to end up dead.