A Philadelphia police officer demonstrates a body-worn camera being used as part of a pilot project last December. Matt Rourke/AP hide caption

itoggle caption Matt Rourke/AP

There's been a sharp decline in the number of arrests and tickets and summonses issued in New York City. Police sometimes use work slowdowns to show dissatisfaction with policies, workloads or contract disputes. Justin Lane/EPA/Landov hide caption

itoggle caption Justin Lane/EPA/Landov

Police wearing riot gear walk toward a man with his hands raised Aug. 11 in Ferguson, Mo. Renewed calls for police departments to hire more minorities have followed the shooting there of a black man by a white police officer. Jeff Roberson/AP hide caption

itoggle caption Jeff Roberson/AP

Akutaq or agutak — also known as Eskimo ice cream — is a favorite dessert in western Alaska. It's made with berries and frothed with fat, like Crisco. Al Grillo/AP hide caption

itoggle caption Al Grillo/AP

Mike Myers is the roving village public safety officer serving southwest Alaska villages including Manokotak. Like many officers in rural Alaska, Myers doesn't carry a gun and often doesn't need one. Martin Kaste/NPR hide caption

itoggle caption Martin Kaste/NPR