The violence in schools needs to be reduced (nothing involving human interaction can be completely stopped). But the decision on what to do and how to do it rests with you.
It’s symptomatic of a dysfunctional government and/or culture to see more violence in schools, not less.
Who is personally responsible for these horrific crimes? The parents of the children and the employees of the school district. The killer comes in third. He is being allowed to kill children by extremely fearful parents and school district employees.
Schools, shopping malls, post offices, large office buildings,...