The video may be disturbing to some.
The shooting happened on Nov. 29.
Detective Reddins and others were responding to reports of an armed robbery.
Some video came from the detective's bodycam, as he confronted the suspect.
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ABC7 Chicago froze the video before the detective starts to fall, after being shot.
Other responding officers eventually shot the suspect, Jerell Thomas, and took him into custody.
Thomas faces several charges, including first-degree murder.
He's due back in court in March.