Please cite references. If you can, then I'd like to see a comparison of that list to the list of "world's craziest mass killers" that were not licensed to carry a weapon.
There seems to be a recurring subtle view that anyone who carries a firearm is some kind of redneck backwoods hick with an itchy trigger finger just waiting to draw down at the slightest provocation. That simply isn't the case. The one thing that CCW permit holders realize is that there are consequences to using a firearm in protection of oneself or of another person.
You can do your own research if you don't recall any. Try Google and look at the UK, Norway and the US. Wait, I'll give you a couple to get you started:
http://en.wikipedia.org/wiki/Dunblane_school_massacre
http://en.wikipedia.org/wiki/Hungerford_massacre
No-one has used the word 'redneck' except you. It would be folly to let any civilian walk onto a 'plane with a gun. You won't convince me that it ever would be a sensible thing to do.