The roots of gun violence

An estimated 80 percent [of U.S: gun shootings] seem to instead be crimes of passion — including rage.  They’re arguments that could be defused but aren’t, then end in tragedy because someone has a gun.  Most violent crimes are the result of human behavior gone temporarily haywire, not premeditated acts for financial benefit.

That is from the new and interesting Unforgiving Places: The Unexpected Origins of American Gun Violence, by Jens Ludwig.