CBSN Chicago: A Deep Dive Into ShotSpotter

ANCHOR TOSS: tonight, we're digging into chicago's 33-million dollar contract with shot-spotter... a high tech gunshot detection system that sends police hunting for gunfire in seconds. with accusations it doesn't work.. and targets in certain communities.. the macarthur justice center at northwestern university is asking a cook county judge to examine its reliability for court cases. cbs 2 investigator megan hickey on if its worth the price.

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