Why is it psychotic.
All I would say is publicise the hell out it. So if the little shits know this is going to happen, and continue to use mopeds for crimes, then they do so knowing the likely outcome.
Up to them then isn't it.
Off course you will get flamed and you deserve to.
Maybe if you say why you think this practice is absurd and very strange, then may see your argument and not flame you.