Emanuel pursues hate crime investigation over police radio slurs

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Mayor Rahm Emanuel is asking officials from the U.S. Attorney and Cook County Attorney offices to launch a hate crime investigation into an influx of racial slurs, including the n-word, on police radio channels.

The request comes nearly a month after the Chicago Police Department initiated its own investigation into the "inappropriate transmission on a police frequency."

Audio from a March 13 police radio call revealed a man saying, "All black lives matter, my a**. F***ing n*****s."

Emanuel said there have been additional instances of racial slurs on official police radio, noting that the transmission was made by and outside source, using non-city-issued equipment.