Why mass shootings don't convince gun owners to support gun control

One thing I often hear in the wake of these endless mass shootings is, "Surely this will convince those gun people. Surely the carnage and suffering are bad enough now that they'll feel compelled to support some gun control."

This betrays a fundamental misunderstanding of the cognitive and emotional dynamics at work. It presumes that mass shootings constitute an argument against guns, to be weighed against arguments in their favor. But to gun enthusiasts, mass shootings are not arguments against guns but for them. The rise in mass shootings is...