Forty-nine people were killed in a mass shooting at Pulse nightclub in Orlando, Fla., in the worst mass shooting in modern U.S. history. Carolyn Cole/LA Times via Getty Images hide caption

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President Obama makes a statement at the White House about the deadly shooting of police officers in Baton Rouge, La., on Sunday. A day later, he sent an open letter to the nation's law enforcement officers expressing his condolences and support. Yuri Gripas/AFP/Getty Images hide caption

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Donald Carder wears his handgun in a holster as he pushes his son, Waylon, in a stroller at the National Rifle Association convention in Louisville, Ky., in May. Attendees at the convention are permitted to carry firearms under Kentucky's open-carry law. Mark Humphrey/AP hide caption

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Gun Carry Laws Can Complicate Police Interactions

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The annual Chicago Fraternal Order of Police summer picnic for city cops and their families. David Schaper/NPR hide caption

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Many Cops Under Tremendous Stress After High-Profile Killings

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Baton Rouge police block Airline Highway after police were shot in Baton Rouge, La., on Sunday. Several law enforcement officers were killed and several injured in a shooting in Baton Rouge on Sunday morning. Max Becherer/AP hide caption

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Protesters camped out in front of the Minnesota Governor's Residence, calling for more "judgment" by police officers. Many say officers are too quick to shoot people whom they perceive as threats. Martin Kaste/NPR hide caption

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Are Police Being Taught To Pull The Trigger Too Fast?

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A memorial for Alton Sterling at the Triple S Food Mart in Baton Rouge. Sterling was fatally shot by a Louisiana police officer last week. Greg Allen/NPR hide caption

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In Baton Rouge, Simmering Mistrust Divides Police, Community

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Kurt Britz checks a driver's license at the 3-D Denver Discrete Dispensary on Jan. 1, 2014, the first day recreational marijuana sales were legal in Colorado. Possession remains illegal for those under 21 years old, and statistics show a widening racial gap in arrests for those offenses. Theo Stroomer/Getty Images hide caption

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As Adults Legally Smoke Pot In Colorado, More Minority Kids Arrested For It

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A technician examines human remains at a morgue in Chihuahua city, Mexico. Monica Ortiz Uribe/KJZZ hide caption

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Mexico's Justice System Battles Its Own Reputation To Build Trust

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A truck displaying a bumper sticker at Malheur National Wildlife Refuge headquarters on Jan. 5 near Burns, Ore. Armed anti-federalists took over the wildlife refuge in Oregon for 41 days. The occupation ended on Feb. 11. Rick Bowmer/AP hide caption

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Utah Sheriffs Threaten To Arrest Rangers If They Try To Close Public Lands

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