What Explains U.S. Mass Shootings? International Comparisons Suggest an Answer
... But there is one quirk that consistently puzzles America’s fans and critics alike. Why, they ask, does it experience so many mass shootings?
Perhaps, some speculate, it is because American society is unusually violent. Or its racial divisions have frayed the bonds of society. Or its citizens lack proper mental care under a health care system that draws frequent derision abroad.
These explanations share one thing in common: Though seemingly sensible, all have been debunked by research on shootings elsewhere in the world. Instead, an ever-growing body of research consistently reaches the same conclusion.
The only variable that can explain the high rate of mass shootings in America is its astronomical number of guns....
Americans make up about 4.4 percent of the global population but own 42 percent of the world’s guns. From 1966 to 2012, 31 percent of the gunmen in mass shootings worldwide were American, according to a 2015 study by Adam Lankford, a professor at the University of Alabama.
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Adjusted for population, only Yemen has a higher rate of mass shootings among countries with more than 10 million people — a distinction Mr. Lankford urged to avoid outliers. Yemen has the world’s second-highest rate of gun ownership after the United States...
Factors That Don’t Correlate
... mental health ...
... video games ...
... Racial diversity ...
A Violent Country
... Americans sometimes see this as an expression of deeper problems with crime, a notion ingrained, in part, by a series of films portraying urban gang violence in the early 1990s. But the United States is not actually more prone to crime than other developed countries, according to a landmark 1999 study by Franklin E. Zimring and Gordon Hawkins of the University of California, Berkeley.
Rather, they found, in data that has since been repeatedly confirmed, that American crime is simply more lethal. A New Yorker is just as likely to be robbed as a Londoner, for instance, but the New Yorker is 54 times more likely to be killed in the process.
They concluded that the discrepancy, like so many other anomalies of American violence, came down to guns.
More gun ownership corresponds with more gun murders across virtually every axis: among developed countries, among American states, among American towns and cities and when controlling for crime rates. And gun control legislation tends to reduce gun murders, according to a recent analysis of 130 studies from 10 countries.
This suggests that the guns themselves cause the violence....
After Britain had a mass shooting in 1987, the country instituted strict gun control laws. So did Australia after a 1996 shooting. But the United States has repeatedly faced the same calculus and determined that relatively unregulated gun ownership is worth the cost to society.
That choice, more than any statistic or regulation, is what most sets the United States apart.
“In retrospect Sandy Hook marked the end of the US gun control debate,” Dan Hodges, a British journalist, wrote in a post on Twitter two years ago, referring to the 2012 attack that killed 20 young students at an elementary school in Connecticut. “Once America decided killing children was bearable, it was over.”