In the Tampa Tribune there is a long, interesting article about a young man walking across the U.S.A. It was a very positive experience for him. About halfway through, he casually mentions that he had to use a previously concealed weapon to stop an attack: In Albuquerque, N.M., he was approached by a half-dozen members of a street gang, who began yelling at him to get off their sidewalk. They got belligerent, refusing to let him pass. “They just exploded in anger,” he said. He was reluctant to say what exactly happened next. “I have a concealed weapons permit,” was...