thats why i think killing that one guy is the right thing to do in walkingdead situation. and by right thing i mean for the greater good of the group.
destroy one live save a bunch(dont remember how big/small the group was back then)
and if by some miracle society resotres. they should not feel sorry they broke the mroal code of normal society
Their case for killing the kid was weak, that the other group would look for him. There was no justification whatsoever, especially since the kid actually helped save both Rick and Shane in an earlier episode.