A US homicide rate more than three times that of Canada (and homicide doesn't just include guns) suggests a deeper cause than simple gun ownership is involved.

Maybe Americans just tend to be angrier and crazier or inclined to crime than most other people. Or they believe deeply in their action movies. How does one legislate against any of these things?

And as John suggests, it isn't the "gun culture" that's a problem. People with rifles and shotguns and collections of historical firearms don't generally commit gun crimes or shoot each other by accident. It's the "handgun culture" (which can't come directly from traditions of hunting game). And it's ironic that some gun-control efforts have apparently made the overall situation worse.

A lot of people must want to pack iron while walking down the street. How many actually need to? Not many, I hope.