The blame is so predictable. Some people have to blame someone, no matter what. The real person to blame is dead, so that just leaves Virginia Tech. It makes no difference what the school did or didn’t do.
The same people who personalize the "why didn't someone act sooner to STOP this thing" are the same people, apparently, who can put themselves into the mind set of a victim or potential victim --
But never into the mindset of a person trying to deal with, capture, and halt this horror.