In 2017, the City of Chicago began deploying ShotSpotter, an auditory detection system that is capable of identifying gunshots and alerting law enforcement to the location where they were heard. The technology slowly but surely spread throughout some of the most dangerous neighborhoods in the city. The system produced measurable positive results, leading to faster police response times and investigations of gun crimes where no 911 call was received. The implementation of ShotSpotter was described as a “game-changer” by the police and many public officials. Yet Mayor Brandon Johnson made a campaign promise while running for office, vowing to remove the system from use at the behest of some of his anti-police activist supporters. Johnson remains committed to the plan which may begin as soon as this week, leaving many observers and a majority of the city’s Aldermen wondering why….