From the New Yorker back in April, Jill Lepore wrote about the history of guns in America.
There are nearly three hundred million privately owned firearms in the United States: a hundred and six million handguns, a hundred and five million rifles, and eighty-three million shotguns. That works out to about one gun for every American. The gun that T. J. Lane brought to Chardon High School belonged to his uncle, who had bought it in 2010, at a gun shop. Both of Lane’s parents had been arrested on charges of domestic violence over the years. Lane found the gun in his grandfather’s barn.
The United States is the country with the highest rate of civilian gun ownership in the world. (The second highest is Yemen, where the rate is nevertheless only half that of the U.S.) No civilian population is more powerfully armed. Most Americans do not, however, own guns, because three-quarters of people with guns own two or more. According to the General Social Survey, conducted by the National Policy Opinion Center at the University of Chicago, the prevalence of gun ownership has declined steadily in the past few decades. In 1973, there were guns in roughly one in two households in the United States; in 2010, one in three. In 1980, nearly one in three Americans owned a gun; in 2010, that figure had dropped to one in five.