A look at the data on murders, suicides and other gun deaths in the U.S. and how they have changed over time.
Both violent and property crime in the U.S. have declined over the long term, but Americans regularly say crime is up.
Americans have broad exposure to firearms, whether they personally own a gun or not. At the same time, most adults say gun laws should be stricter.
St. Louis led the nation with 66.1 murders per 100,000 people in 2017. It was followed by Baltimore, Detroit, New Orleans and Baton Rouge.
The share of U.S. public secondary schools with sworn officers on site has increased in the past decade.
More than half of U.S. teens say they are worried about the possibility of a shooting happening at their school, with one-in-four saying they are very worried.
Last year, more than half of U.S. adults said they would oppose allowing teachers and officials to carry guns in K-12 schools.
About four-in-ten Americans say they either own a gun themselves or live in a household with guns, and 48% say they grew up in a household with guns.
Americans have broad exposure to guns, whether they personally own one or not. About seven-in-ten say they have fired a gun at some point and 42% currently live in a gun-owning household.
Officers' feelings of frustration and anger are linked to views of the public and police tactics.