Over at The Federalist, Rachel Lu writes:
It?s one thing to accept that my husband?s mostly-safe job has a slightly increased risk of death by psychopath. It?s quite another to accept that he can?t do anything about it. Granted, it isn?t likely that someone would try to murder him and his students in cold blood. We now have to agree, though, that the risk is no longer entirely negligible. If news rooms were being shot up at the same rate, I?m guessing we?d be seeing major movement on the protect journalists front.
In the end, that?s really the question we have to ask. In a real emergency, do you want the psychopath to be the only one with a gun? Or would you rather take the terrible chance that people like my husband (a legal gun owner and married father of four) can handle carrying a weapon responsibly, knowing he might then be in a position to save your life if a deranged gunman chooses our university community for his next rampage?
Go read the whole thing.