Gun control, in the broad sense, pretty obviously works. Fewer guns are correlated with fewer gun deaths. But the American situation puts the lie to the magic thinking of Canada’s gun control obsessives. It’s not about registering hunting rifles or reclassifying a certain gun as Very Very Dangerous instead of Very Dangerous. Over the past 20 years, the broad trend in gun violence, and indeed all violence, has been a continent-wide phenomenon: a peak in the mid-1990s, a quick plummet, a plateau. You see it in Canada, with its tough gun control, and in the United States, with its lenient gun control. You see it in New York, with its tough gun control, and you see it in Arizona, with its lenient gun control. The only question is how high up the chart the line plummets and plateaus.