i'll keep saying it until leftists get it through their thick skulls. If a obviously mentally ill kid like this can slip through the cracks of the system, then we have no system. When the police are told, hey, over there, crazy guy with intent to kill, and they go "investigate", walk away saying nothing to see here, then we have no system.
If we cannot depend upon the authorities to stop a killer when the killer is pointed out to them, then we shouldn't be surprised when people say we should arm everyone. I don't believe arming everyone is the solution, but i'm not at all surprised that some people do given the fact that we can't depend on the police at all to do what should have been a no brainer.