Today I can walk onto the campus of any college or university, and of most primary and secondary schools in the country as well, with little or no chance of being challenged or my progress impeded in any way that would be effective if I had slaughter on my mind. So can just about anyone else.
This state of affairs is as shameful as the refusal, in the 1970’s, of the Federal Aviation Administration to mandate reinforced cockpit doors on airliners. That bit of foot-dragging to save the airlines money allowed the 9/11 tragedies to happen. When we invite people to walk into critical areas, we underwrite whatever happens next. We don’t do it in courthouses. We don’t do it in airports. Why in the name of heaven do we permit it at our schools?