>The U.S. also has something most of Europe does not have: A 36% percent minority population (higher in younger age groups: 50.4% of American children under the age of 1 are in a minority groups) that has been victimized for generations because of our extremely aggressive war on drugs. Most Europeans employ a treatment approach while America employs a "lock em up" approach.

FWIW, one of the things I read this weekend noted that these incidents are actually more common in less diverse areas. You don't tend to see the mass shootings in the big cities, but in suburban and rural areas.

So I'm not convinced that the US's diversity plays any role in the frequency of these incidents.

Tamar