Need I?
Ok, well there are two problems with your made up scenario. First, that someone hell bent on carnage isn't going to go somewhere were its possible that some CCW permit carrier will get off a lucky shot and end his spree too early, he'll go to a gun free zone as we have already seen numerous times. And the second and major problem is that concealed carry has been around in many states for a long time and it hasn't happened yet.
Name one instance where a fully automatic weapon was used to kill a large group of people, outside of war. Because unless its a fully automatic weapon, he can't fire bullets faster than I can with my 380.
See...you can post nice when you want to
Someone looking to massacre is looking for one thing...a large number of targets. They are not afraid if there are armed people there, they are looking to go out in a blaze of glory...they expect to die
We are talking about open carry, not concealed carry. Personally, I don't care as much about CCWs. I find they tend to have had thorough background checks and training. It is the morons taking their AR-15 for a walk that worry me. These idiots are looking to intimidate and obviously lack the brains to blow their nose
I do not want these morons in movie theaters, churches, little league games or Jack in the Box. They have amply demonstrated that they are not responsible gun owners