I'm certainly not condoning this horrific crime with the following comment, and I'm not a medical professional. But, look at that kid's face.  It's not "normal."  My instincts tell me FAS or some other kind of maternal neonatal drug use.  Who knows what this boy's early years were like? We certainly hear enough horror stories to surmise.  Of course, he's a danger to society, and Mr. Johnson certainly didn't deserve to meet his end in this way, but maybe your anger and frustration (and votes!) would be best served by directing it toward current health care systems policies rather than this child (yes, I know he's 18 now.)  Just saying...