Call it sad, because it is. Senseless, because it is. But don't call it surprising. These rampages by crazy people are a mental health issue. Until we face that fact, they'll continue to happen. If they can't get guns, they'll get knives, as we've seen. If they can't do that, they'll fabricate something, as we've seen. Stop blaming the inanimate weapons and start treating the people that perpetrate these senseless crimes.