Wow. The stupidity level just keeps growing.
It seems to me it is a matter of time before some kid pulling one of these gets seriously hurt or killed.
Be it an unarmed bystander who grabs a convenient blunt instrument and brains one of these idiots or a lawfully armed citizen or plainclothes officer who shoots one, it seems inevitable that this "prank" is going to go very badly one of these days.
I would not blame anyone for using any degree of force to stop this event. We've seen too many stories where these kidnap victims are never seen alive again.