Croc:
Don't forget the judicial system altogether has very little to do with The Justice as outlined by the Golden Rule and as the most people understand it.
The Golden Rule is formulated "do to others what you would like to be done to you". Now we're to apply it to the cases of grave crimes. E.g.

What what you would like to be done to you, if YOU have stripped an 3 y.o. adopted son, and thrown him off a bridge to a river?

I think that one's conscience could demand death for oneself in such case. That looks natural.