He spent the day trying to kill everyone around him, and you think he deserves a slap on the wrist?
Parents penalized? Theit kid tries to kill them, and you’re going to penalize them? The victims?
Your value system is completely out of whack. Kid is a threat to himself and others, and should have been locked up. Whether as a patient in a psychological institution or an inmate in a correctional facility is an open question, but separation from society and professional supervision is not.