Ok, some of you guys don't seem to know what you're talking about. The kid DID have a BB gun, yes, but he PAINTED it black. Guess what, when they comapred the BB gun and a REAL gun side-by-side on CNN, they looked THE FREAKIN SAME. If I had seen that gun aimed at me, I woulda shot the little **** myself. He painted the whole gun black, even the red tip of the gun that distinguishes it from a real gun.
How would the police have known that the boy was inside the bathroom unless they went in. And when they went in, they had a gun aimed at them. Not much time for a flashbang, eh?
Turns out the guy had put aimed the gun at his classmates and also put it up to his own neck. Replace the BB gun with a real one and you have an idea of what the rest of the school thought.