They have this second amendment to which they cling for justification of their gun ownership but at Monticello I had a long conversation with a Professor of American history about how would Jefferson have viewed the interpretation of this amendment, personally I think he must be spinning in his grave.
Whilst I can understand the need in the wilderness areas to be able to protect oneself, I cannot see why the convenient amendment is being used to condone semi-automatic weaponry. I would have thought that there could be some point beyond which private ownership should be restricted but there are too many interest groups, mainly the NRA, for the country to have the courage to take any step towards restricting. If events like Sandy Hook didn't cause a change nothing will yet they are quick enough to take actions against other countries who are perceived to have attacked the US, note post 9/11, maybe they are more frightened of the NRA than off other dictators.
Americans are often quick to point out that there is gun crime in other more regulated countries but it's the rarity of events like Dunblane that makes them so newsworthy and horrific, I hope we never get desensitised to the same extent that many Americans are.