This man, no doubt; had a history of 'beefs' doncha think?
It is not the incident; but the mind set that wraps around it. . .would like as well to know what his favorite movie is. . his favoritie pastime. . .etc.
Sick, sick; disgustingly sick; and never seeking help; just 'being who he is'; no excuses; I do not care what supposedly happened to him when he was twelve years old.
These people are problems first. . .last and always.
I think that many people are looking at his back ground in order to see the why in what he did. It might help explain things. I don't know that they are looking to make excuses. At least taht is why I am interested.