What religion is he? The media needs to look deeper into his faith and place of worship to see if a link to violent behavior can be established. I'm sure the experts will see trends in the violent acts committed by individuals based on race, gender, religion, and weapons used. Trends such as "whites", males, Christians or Muslims (irregardless of actual religious teachings).
I think it is myopic to give the kid a pass by saying he has psychological problems.
The only trend you would see if you studied that is that most murders are committed by males, and that most murders are committed with guns (in the U.S., and handguns, not necessarily rifles). His race or religion is going to have a null effect on it, statistically. There is no statistical correlation with violence based on either of those things.
EDIT: Oh, you were being facetious?
ANOTHER EDIT: Regarding his access to a .22: I think when I was 11 I was still shooting a BB gun, though I had used a .22 with supervision at that point. Probably not until I was 14 or 15 did I have regular access to a .22. And I only ever shot tin cans with it, anyway (not willing to hunt deer because I didn't want to skin them--this should be a cardinal rule of hunting, by the way, that you should only hunt what you are willing to gut yourself, but that's a totally off-topic discussion for another day).
I think people tend to let kids have .22s at too young an age. They don't realize that .22s are a deadly weapon. They might be slightly less deadly than a .270 or a 30.6 but they are still deadly weapons. Many many people have been killed with .22s. If you can kill a deer with it, you can kill a human. My father's first deer, many many years ago, when he was 12? .22 to the brain pan, right under the antlers. Felled instantly.
Like there was another story about a five year old shooting his sister with a .22. A five year old should never even touch a .22. That's completely and utterly inane and you can't make some claim about it being part of your "culture". I grew up in rural Pennsylvania. Everyone hunts and learns to hunt. My father never let me even
touch a .22 until I was nine years old.