If there is a person or institution to blame , Who do you think is responsible this happened, why and how to prevent that from happening in the future but in a way it won't ever happen ever AGAIN, anywhere and the problem is finally solved or at least improved.
My opinion on this is all of the above it is a mix of all. Mental Health is so important now that is important to be addressed as wel by the kids parents, teachers, etc etc Because most of the shooters on many of these incidents they have a thing in common: They were bullied, abused, mistreated and they were antisocial people also, they were mentally fragile and had personal issues to deal with that probably never were taken care of the way it should had been done. I mean how could a kid shoot their own grandmother or their own parents?