As we try to sort through the actual biography of our country’s latest mass shooter, Aaron Alexis, the fact of gun violence continues to be plain…and plainly ignored.

The largest study of gun violence in the United States, released Thursday afternoon, confirms a point that should be obvious: widespread American gun ownership is fueling America’s gun violence epidemic…

…the authors ran a series of regressions to see what effect the overall national decline in firearm ownership from 1981 to 2010 had on gun homicides. The result was staggering: “for each 1 percentage point increase in proportion of household gun ownership,” Siegel et al. found, “firearm homicide rate increased by 0.9″ percent. A one standard deviation change in firearm ownership shifted gun murders by a staggering 12.9 percent.

Not that we’ll ever be allowed to do anything about it…after all the only words in the Constitution that mean nothing are “well regulated”.