I guess you'd have to have read the article. In most of the video's I've seen, the "open carry" crowd hasn't been carrying shotguns...they've had their weaponry strapped to their backs. Mostly in Texas, where they wanted to be able to exercise their right to carry their weapons openly. To me, a guy with a gun strapped to his back might as well be wearing a florescent green shirt that says "shoot me first". But....since they won the right to carry their weaponry in the open, shop owners, who didn't feel any real need or desire to post signs banning concealed carry, are now ordering the "not in here" signs for BOTH open carry AND concealed carry.
If you were a bad guy wanting to shoot up a fast food place - which one of these guys would you shoot first?