I don't live in the US but I never understood why you can get there guns so easy, as if you were buying tomatoes... :?
And look at the consequences:
Florida School Board Meeting Shooting - Full WMBB Video - December 14, 2010 (http://www.youtube.com/watch?v=wQjQOlJvMzE#)
By the way, this a great documentary by Michael Moore about this subject:
Michael Moore - Bowling for Columbine (2002) - Movie Trailer (http://www.youtube.com/watch?v=2jpEhmdVZvA#)