Well since you prefaced it with a "maybe," if you're comparing Europe and America, then what are the differences? Are there stricter gun laws in Europe? Is hunting (a hobby that involves guns) as popular a pastime in Europe? All of these things would be factors in determining how available guns would be to your average criminal or crazy. And then if you're going to compare just gun violence, how does America stack up to the rest of the world in terms of other violent crime, like assaults and domestic abuse? My gut tells me that you'd find that in the Northern Hemisphere, it's pretty consistent across the board. Already we have two people from the UK on this very thread relating anecdotal evidence of violent crimes that didn't involve guns or Americans. I absolutely believe that this is an phenomenon America shouldn't be proud of, but I think the issue runs much deeper than that and is much more universal. I echo Atom's sentiments: this is part of a larger human problem that we're going to have to deal with until the idea of being violent towards another person is a thought as unpalatable as eating raw sewage.