I firmly believe some people are born psychopaths. Not that I am in any way calling this lad a psychopath, nor am I excusing anyone's behaviour, it's just not always the fault of the upbringing. No matter how cared for, loved, or well brought up someone is you cannot always tell what someone is or is capable of doing.The fact they are not jumping to defend him shows full well he is guilty. I know most parents would defend their children if they was falsely accused. Odd they are getting on with life, then posing for the pie shop knowing the criticism that is online. I would be embarrassed and feel like a failure of a parent if one of my children disrespected someone like that.
I agree with what you say though, I would be utterly embarrassed and feel bloody awful. Certainly would not be parading around like nothing had happened.