There are MANY unanswered questions about the shooting. I hesitate to believe anything the media is saying at this point.
First, we were told there were 2 shooters and the cops thought one was hiding. Then they suddenly stopped reporting that with no real explanation, saying there was just one shooter.
It was reported that the mother was a teacher. She wasn't.
It was reported that the brother was the shooter. He wasn't.
It was reported that the shooter has mental problems and his mother was irresponsible to teach him how to handle guns.
On and on it goes. . . .
There's much more to this story than what the media is telling us. I think, before we have any knee-jerk reactions, we should ponder what the media is NOT saying. Maybe the blog posted in the OP has a point.