What is there not to understand about this logic?

John Lott: statistics don't line up in the crosshairs for gun control

Economist, commentator, and author John Lott asserts that the facts simply deny the arguments of gun control advocates. "You can't find a place around the world where murder rates have gone down after gun control. In fact, they have gone up," Lott explains. Lott argues that gun free zones are actually a contributing factor to gun violence. "I feel something has to be done too. You have to look at common factors that exist in all of these shootings. They keep taking place where guns are banned," he says.