Oh right, and who's going to administer this common sense test? The ministry of fuck-all-else-to-do?
Nothing will change, this whole thing while unfortunate could only have been prevented by the kid not being a retard.
As for 'shoot to wound'... no such thing, if you fire a gun at someone you do it with the intention of killing them, someone can die MUCH faster from a hit to the upper thigh than one to the chest.