Unfortuneatly folks that dumb aren't going to put two and two together.
This is a major human problem. On one side you've got people well armed and capable of defending themselves. on the other side you've got people well armed and convinced they are unstoppable. Conflict is just impossible to avoid and doesn't end well much of the time.
given the same situation...do you have it in you to shoot like the old man did? Sure as shit I would...but I am sure there a plenty who wouldn't...I am not waiting around to get shot if someone pulls a gun
Shit yeah, the publicity will be great for business.