Kids: you just can't beat them when they really really deserve it anymore. I think I'd like to see that squatting cop reach back, grab his pepper spray and just have at it. 'WHY???!!!' screams the kid.
'Because I wanted to show the other officers how to spray a punk. Now you know how you would have felt if you had hurt someone.'
At the very least, show the kid those graphic car crash video/slide-show things (I can't say I've ever seen it myself) so he knows what could have happened. Or military school.