Some colleges and police departments are starting to use software that scans social media to identify local threats, but most tips still come from members of the public.
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A crib sheet created to aid police-student interactions might be the first of its kind. The sheet was created by Akron, Ohio, high school students with help from the city's police department.
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Yonkers community activist Hector Santiago demonstrates the "stop-and-shake" with Lt. Pat McCormack of the Yonkers Police Department. The idea, Santiago says, is to get people to introduce themselves to cops on the street.
Courtesy of Hector Santiago
Attorney Scott Rynecki and Kimberly Ballinger, the domestic partner of Akai Gurley, filed a lawsuit seeking $50 million against the city, the NYPD and officers Peter Liang and Shaun Landau.
The Akron Police Department training class works out at Kent State Basic Police Officer Training Academy. Donald Clayton is the only African-American in the class of 20.
New York Police Department Commissioner William Bratton attends a press conference after witnessing police being retrained under new guidelines at the Police Academy on Dec. 4.
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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.
Protesters and law enforcement officers face off during a protest outside the Ferguson Police Department in October. Ferguson police statistics show the department arrest blacks at a higher rate than other racial groups — but that disparity is true for police departments across the country.
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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.