Earlier in July, the Violence Policy Center’s Josh Sugarmann – writing on the Huffington Post website – made what had to be one of the more bone-headed attempts in recent memory to drive a wedge between people in the firearms community when he critiqued remarks written by Jan Libourel, editor of Gun World magazine. Libourel is an extraordinarily bright guy, well-read in every sense, and – as is common among gun writers – unabashedly opinionated. As a recognized firearms authority, he’s supposed to be opinionated. That’s his job, and he is very good at it. Gun owners enjoy those opinions,...