I was, like most decent people, sickened by the recent shootings in Arizona.  After my initial disbelief my first thought's were 'who was hurt? were any children killed?' other thought's were 'why did he do this? did he have political or religious motives?' I think these are totally natural responses.  A lot of people inside and outside the US will have been shocked but not surprised and quickly asking how this person happened to possess a gun, another fair response.  Unfortunately this kind of incident does seem all too common here in the US and will soon be replaced in the headlines of most peoples minds, obviously not for the victims families and friends, but for most people, tomorrow will be just another news day.  This is sad and maybe it does sound quite negative but I fear it is a reality.
Around the world, particularly Europe, Australia and New Zealand, countries are focusing on Americas gun laws, as they often do when a tragedy like this occurs.  To many Brits, the fact that so many US citizens even want to own a gun is mind boggling.  Here in the US people don't feel the need to justify gun possession as it has always been an American's right to bear arms going back to when America was a frontier against the British, French and Indians back in the 1600's.  Americans are very protective over what history they have.  Personally, I find it a very weak link between the US Civilians of the 17th century protecting their families lives to Joe Bloggs keeping a selection of automatic weapons under his bed in the safe American suburbs.
Another big reason I believe a lot of Americans need to own a gun(s) is Paranoia.  US citizens actually believe they live in a violent, crime ridden society where everyone is likely to be a victim.  I have seen this type of paranoia for myself from the middle-class gated suburbs to the big cities that are so safe they make many English cities on a Friday or Saturday night seem like violent hell holes for drunks and crazies!  Okay, maybe that's not too far from the truth.  From the news and stats that I have read, the US is actually one of the safest places in the world to live and the crime rate (including violent crime) is lower than many European countries, including England.  The one exception are murders and crimes that involve firearms.  One simple fact that should more than encourage a complete overhaul of the gun laws within the US is that without the guns these crimes could seriously have been avoided.  If a confused, bullied and depressed teenager wants to punish others and end his life, it is so, so easy for him to access an arsenal of guns and go out in a blaze of glory.  We have seen many incidents of high school massacres on the news.  Maybe this confused individuals British equivalent would quietly overdose on his mothers medication?  he certainly wouldn't have been able to go on a rampage with an automatic weapon. 
The devils advocate in me could say that if there were all of a sudden no guns in America then certain members of society would not fear getting shot and so commit crimes.  This is a flawed theory and not one that I subscribe to.  It is for Americans, not me to address, but as it is political suicide for a politician to challenge the gun laws and/or the NRA I don't see any big changes coming anytime soon.   It scares me that an actor who believes Jesus was born from a Virgin, the world is 6000 years old and an Uzi 9mm is a perfectly acceptable accessory is more likely to be the president of the United States than a Scientist who is an Atheist, believes in evolution and would like a national gun amnesty.
I hope we can learn from the recent events in Arizona, so avoid it from becoming just another gun massacre. 
Other points I would have like to have mentioned:
- The constant 24/7 news and TV channels that unintentionally glorify crime
- The evil Westboro Christian church who believe God is laughing at the Arizona victims