The NYT (below) reminds us today of this very dangerous situation in the US.
A good fraction of US households have guns. If there is no foreign invasion, it seems to me these guns are going to be used against Americans, one million in the past four decades.
In the case of Mexico, which obviously is a problem for another country to solve, sixty thousand young men and women were killed during the past six years.
I believe that humanity is getting near a bottleneck this year, the Winter solstice at December 21, 2012, is an apocalyptic date. If everybody has a gun, all of us are in danger. Humanity is evolving into a technological species, in which everybody can kill the neighbor.