An African American gunman with an apparent grudge killed two New York police officers in a cold-blooded attack after weeks of outrage over police killings of unarmed black men.
Law enforcement officials are taking advantage of new tools of computer science, machine learning and big data to figure out where criminals may strike next.
Police in Berlin are considering deploying software that predicts crimes.
Policing is violent, and juries often give officers benefit of the doubt.
Dozens of eyewitnesses offered evidence about the death of Michael Brown, and much of it was confusing and contradictory. Here's why.
How do off-duty officers differ from those on the clock? Which things are they allowed to do, or not do? Tara explains.
With a petition now before the White House that argues for video gear to be worn by all police officers, Trace examines the pros and cons of that approach.
With the recent controversy still simmering in Ferguson, Missouri, Trace examines the use of lethal force by police officers.
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