A ShotSpotter microphone is pictured on Feb. 7, 2024. (WTTW News)

Supporters say the ShotSpotter system is a useful tool that helps Chicago police officers get to crime scenes faster. But critics say the technology is unreliable and contributes to over policing in communities of color.

(Michael Izquierdo / WTTW News)

The city of Chicago and the Illinois Attorney General’s Office negotiated an agreement to shift oversight of CPD’s stop-and-frisk practices into a consent decree governing the department.

Fraternal Order of Police Lodge 7 President John Catanzara appears on “Chicago Tonight” via Zoom on May 14, 2020. (WTTW News)

A day after he announced his intention to leave the department, John Catanzara — the first-term president of the Fraternal Order of Police Lodge 7 — posted a picture of his personnel action request on his Facebook page, which shows that he has indeed retired from the CPD.

John Catanzara (WTTW News)

The stunning announcement comes after John Catanzara, the head of the Fraternal Order of Police Lodge 7, spent hours testifying at his own termination hearing Monday.

A collage of recent top cops in Chicago. Top row, from left: David Brown, Eddie Johnson, Garry McCarthy, Jody Weis. Bottom row, from left: Phil Cline, Terry Hillard, Matt Rodriguez and most recent interim Superintendent Charlie Beck. (WTTW News photos)

Chicago has seen more police chiefs than mayors in its nearly 200-year history. Occupants of the powerful, high-profile position walk a political tightrope, and have suffered some epic falls. Here’s a look at the legacy of the city’s most recent superintendents. 

Chicago Police Superintendent Eddie Johnson appears on “Chicago Tonight” on Nov. 14, 2019. (WTTW News)

Former top cop Eddie Johnson is accused of sexual assault in a lawsuit filed by a member of his security detail. And a new report says he received special treatment after being discovered unconscious behind the wheel last year.

Body camera footage released Monday shows Chicago’s former Police Superintendent Eddie Johnson, right, asleep behind the wheel of his vehicle on Oct. 17, 2019. The incident led to his eventual termination by Mayor Lori Lightfoot. (City of Chicago)

Inspector General Joe Ferguson’s report details several instances when Eddie Johnson got special treatment after being discovered unconscious behind the wheel of his vehicle near 34th Place and Aberdeen Street last year.

Chicago Police Superintendent Eddie Johnson appears on “Chicago Tonight” on Aug. 9, 2018.

Cynthia Donald, who filed the lawsuit Thursday in Cook County Court, claimed that for more than three years, she was subjected to “unwanted and uninvited sexual advances” from Johnson inside his office at CPD headquarters.

Body camera footage released Monday shows Chicago’s former Police Superintendent Eddie Johnson, right, asleep behind the wheel of his vehicle on Oct. 17, 2019. The incident led to his eventual termination by Mayor Lori Lightfoot. (City of Chicago)

Inspector General Joseph Ferguson released a report Thursday that concluded Former Chicago Police Superintendent Eddie Johnson lied repeatedly about the incident and what happened afterward.

Body camera footage released Monday shows Chicago’s former Police Superintendent Eddie Johnson, right, asleep behind the wheel of his vehicle on Oct. 17, 2019. The incident led to his eventual termination by Mayor Lori Lightfoot. (City of Chicago)

The video and documents come more than eight months after the encounter between police officers and the former superintendent, who was found asleep behind the wheel of his SUV after a night of drinking. 

Chicago Police Superintendent Eddie Johnson appears on “Chicago Tonight” on Nov. 14, 2019. (WTTW News)
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Mayor Lori Lightfoot called on the city’s watchdog to complete his probe into what happened before — and after — former Chicago Police Superintendent Eddie Johnson was discovered asleep in his running car after a night of drinking.

Jussie Smollett, left, and former Police Superintendent Eddie Johnson speak to the press, separately, on Tuesday, March 26, 2019, the day prosecutors dropped all charges against the “Empire” actor. (Credit: Ashlee Rezin / Chicago Sun-Times via AP; and Teresa Crawford / AP Photo)

Attorneys for the former “Empire” actor subpoenaed Chicago’s inspector general, requesting documents tied to an October 2019 incident in which the city’s top cop was found asleep behind the wheel of his car. 

A Chicago police officer looks on during Monday’s police board listening session at the Trinity United Church of Christ. (Matt Masterson / WTTW News)

The Chicago Police Board held the first of three community listening sessions Monday in Washington Heights as it continues its search for a new superintendent.

In this Thursday, Nov. 7, 2019, file photo, Chicago Police Department Supt. Eddie Johnson, right, announces his retirement as Mayor Lori Lightfoot looks on during a press conference at CPD headquarters in Chicago. (Ashlee Rezin Garcia / Chicago Sun-Times via AP)

The unceremonious firing of Chicago’s police chief just weeks before his retirement has rattled a department that, under his leadership, was seeking to restore public confidence.

Mayor Lori Lightfoot fires top cop Eddie Johnson weeks before his retirement. Are the feds eyeing House Speaker Michael Madigan? Legal pot hits a roadblock. And Mitchell Trubisky shines in a Bears win over Dallas.

(WTTW News)

Three public listening sessions will be held next week as the board seeks a permanent replacement for Eddie Johnson, who was fired as police superintendent earlier this week.