In the aftermath of yet another shooting spree in US (may the victims rest in peace), the gun fetishists again argue foolishly against stricter gun control. They say that had the teachers been armed, such mass killing could have been prevented (e.g. here, here, here).
That's ridiculous. Teacher's job is to teach students, not to shoot a gun. They should be able to devote their time to improve their teaching skill, not their shooting skill. If they now have to arm themselves with guns, they need special training, a lot of practices, and of course guns and ammunitions. Now, there are hundreds of thousand of schools in US. (Sounds like a good business for gun sales; but that's not the point).
At the same time, knowledge keeps growing, teachers need to update themselves with all that, so they can teach better. That's where they are better at, teaching. Not shooting.