The US has 270 million guns and 90 mass shooters in the period 1966-2012. The US is the "exceptional" country in the upper right of the chart. (number of guns, horizontal axis) No other country has more than 46 million guns or 18 mass shooters. Adjusted for population (guns per 100) the chart looks like this:
Only Yemen, in the middle of a civil war, has a higher rate of mass shootings. (number of shootings, vertical axis) The US exceeds even Afghanistan in the number of mass shooters. According to a recent study from the University of Alabama, the number of guns in a society correlates with the number of mass shootings. That relationship holds even when the US is deleted from the data. Across multiple axis of analysis the result is the same: more guns corresponds with more gun deaths (130 studies from 10 countries). The US does not have more crime than other developed countries, but US crime is much more lethal. It is only one of three countries (Mexico and Guatemala) that give citizens the inherent right to own guns.
The mass homicide at Sandy Hook school in 2012 was the watershed for the gun rights debate according to a British observer, whose country instituted strict gun laws after a 1987 mass shooting. Australia did the same in 1996. New Zealand recently banned assault weapons after a March massacre in Christchurch. The British journalist wrote, “Once America decided killing children was bearable, it was over.” How much longer will 'Merica continue to pay the cost of unregulated gun ownership in human lives? You decide*.
*The gun lobby spent more than $55 million to elect Il Douche and NRA allies in Congress. Political hacks for the gun industry attempt to frame the problem of mass shootings as a mental health one. NOT. So why would a society continue to provide guns to a populace with high rates of mental illness, if to do so endangers its safety? Answer: the historical anachronism this society is saddled with is being cynically used as a cover for profit making. No sane hunter or marksman needs a semiautomatic military weapon with 100 round magazines--a violent white supremacist bent on eliminating the "infestation" with high rates of fire, does. Even Hitler was sane! The Heller decision, admittedly 5-4, states that bans on "dangerous or unusual weapons" such as machine guns, and imposing conditions and qualifications on the commercial sale of arms” are constitutionally permissible. It is time.