You bring up part of a very good point, I think. The entire concept of security is upside-down. Schools, where children used to bring guns are now full of “teachers” who are unarmed if not afraid of guns. The doors are security doors, virtually un-breakable with little windows. This is “stupid”, mechanical security. It works for whoever controls the lock. With stupid people in the mix, who feel “safer” because of this, they are worse than useless.
Everyone has forgotten the lesson of 9-11. A plane full of disarmed people is a killing field for a man with a box-cutter.