Like the head doctor he was seeing?
Too many people blame everybody but the wackjob with the gun. Why didn't so and so report him, stop him, yadda yadda yadda. If everybody reported everything suspicious, we would live in a police state. Have a bad day? Wind up in jail. The person to blame is the as-shole with the gun. It's unfortunate. But at least he's dead. No money wasted on a trial.
ETA: Looks like I misread. The as-shole lives. Too bad.