Incident 255: Unreliable ShotSpotter Audio Previously Used to Convict Chicago Man in Murder Case

Description: ShotSpotter audios were previously admitted to convict an innocent Black man in a murder case in Chicago, resulted in his nearly-one-year-long arrest before being dismissed by prosecutors as insufficient evidence.


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Alleged: ShotSpotter developed an AI system deployed by Chicago Police Department, which harmed Michael Williams.

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Khoa Lam


A "variant" is an incident that shares the same causative factors, produces similar harms, and involves the same intelligent systems as a known AI incident. Rather than index variants as entirely separate incidents, we list variations of incidents under the first similar incident submitted to the database. Unlike other submission types to the incident database, variants are not required to have reporting in evidence external to the Incident Database. Learn more from the research paper.