One of the most obnoxious liberal talking points on guns involves the idea that guns, in and of themselves, cause gun violence. Apparently, as this argument goes, guns or “gun culture” cause law-abiding citizens to transform into murderous nuts. In other words, more guns must mean more gun violence. The argument was famously made by sports writer Jason Whitlock and forwarded by Bob Costas on Sunday Night Football after a player reportedly murdered his girlfriend and killed himself. … According to the latest Small Arms Survey conducted by the Graduate Institute of International and Development Studies, the U.S. tops the...