All the time when foreigners like us come to the US, they try to contrast American culture with their own. However, a lot of common threads run through many cultures, and it is always hazy to try to pick out one that is absolutely unique to a particular culture. Most of the times, one can only contrast magnitudes, and not existence of cultural elements themselves.

On March 22, a 16 year old boy in a remote part of Minnesota killed his two grandparents with a shotgun and a handgun, then walked into his school and killed nine others. (link)

I think I can safely say that these incidents of school children killing students, and especially members of their own family, are pretty much a unique hallmark of modern day America. I will let the experts decide if they are also a hallmark of present American 'culture'...I am at a complete loss to understand why the Government should be so lackadaisical in enforcing gun laws. And I also can never understand what possession of a military or police style gun by absolutely any citizen has anything to do with 'constitutional rights'...