Lawsuit accuses Chicago authorities of misusing gunshot detection system in a murder case

A 65-year-old man named Michael Williams spent almost a year in jail over the shooting of a man inside his car before prosecutors asked a judge to dismiss his case due to insufficient evidence. Now, the MacArthur Justice Center has sued the city of Chicago for using ShotSpotter, which it calls an "unreliable" gunshot detection technology, as critical evidence in charging him with first-degree murder. The human rights advocate group out of Northwestern University accuses the city's cops of relyin...