Just a little speculation here. In the scenario where you have a gunman trying to kill multiple people in a school, store, or similar public place, I would be willing to bet that one motivated individual with a fighting folder could end the fight. A gun would be better. But, many of us can't or don't carry a gun. I carry a folder everywhere. In a Columbine or similar target rich environment, the killer will need to focus on so many different targets that the key would be to lay in wait and ambush him as he turned a corner. Or, to rush him from behind. I would attempt to control his gun with one hand and cut him to ribbons with my folder. It wouldn't be the perfect scenario. However, I think you would have a chance due to the fact that there are so many targets. He can't focus on all of them at once.
Take advantage of the confusion. Ambush at close range or rush when he is distracted on another target. Good reason to take my Cuda Maxx everywhere.
Take advantage of the confusion. Ambush at close range or rush when he is distracted on another target. Good reason to take my Cuda Maxx everywhere.