You've all missed the plot. Today it's a pistol or two which was sneaked on campus but tomorrow it's a drone that can seek out an individual or group and set off a substantial explosive (perhaps directional) killing one or many. Yes, today you may feel the enemy is the "gun/pistol" which is today's tool but tomorrow you'll blame a different tool and I'm fairly confident it's going to be small airborne vehicles that can be launched from the parking lot and the perpetrator can remain largely anonymous. Ted Kaczynski would have loved the future.
Not anonymous because I'm not unstable and I've been counted on table 15.