Why Are American Cops So Bad at Catching Killers?

Earlier this week, NPR reported that more than one-third of homicides in America go unsolved and examined why police investigators don’t close more murder cases. The Marshall Project asked Thomas Hargrove, the founder of the Murder Accountability Project and murderdata.org, to talk about what he’s learned in a career of studying data on homicide investigations across the country. After 37 years as an investigative reporter, Hargrove recently retired...
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