Need I point out that if some of those other students or the professors had been carrying firearms, that wacko would have hit the floor before he could anything.

If you have thousands of normal people in an area, and one or two wackos who would like to kill people, and the no one is armed, then the wackos will just illegally get guns (which is made a lot easier by gun control as it hugely boost black market sales of guns) and blast away 30+ of the normal people.
If they are all armed, either the wackos would never dare to try anything, or they would be cut down doing so. Wackos can always get guns to harm people with, and they always will be able to. The question is: do we want to respect normal peoples 2nd Amendment Constitutional Right and allow them to defend themselved? Tell you what, if I had a gun and I was in one of those classes, that guy wouldn't have taken another step after he opened the door!

lol, I think I'll just go away and not check this for a day now, see what rabid leftist taunts (or hey! maybe even some intellegent conversation) have popped up ;).