American police are routinely armed, but they still get shot at daily.
I don't believe the threat of them being able to fire back is having much effect.
Of course I appreciate the argument, I just don't believe it actually works, and the statistics don't suggest it works either.
If a crazed child overcomes a single teacher, they now have a gun in their hands.
America's gun mentality has to change. When the solution to a gun problem is 'more guns', then there is little to no hope.
I also understand the argument that guns don't kill, people do. But I would argue that guns facilitate people killing. They facilitate death or maiming with such effectiveness, they are on a par with a bomb.
Regardless, it's no use us Brits lecturing to Americans. We have different outlooks, and simply don't have the love affair with guns that so many Americans have. If dead schoolchildren cannot sway them, no words will.