Allegations:
Polk, her son B.B. and nephew C.D., who were both minors at the time, were headed home from the hospital when Officer Dent and several police vehicles approached Polk's vehicle. B.B. had just received treatment for leukemia, and the three of them had stopped at Polk's friend's house to pick up a few things. While driving, Polk noticed that Dent, whom she knew from his patrol of CPS schools, was driving behind her. After a time, the two cars went in different directions until Polk turned onto West Division Street, at which point seven or eight unmarked and marked police vehicles approached. The officers, both in uniform and in plainclothes, exited their vehicles with their guns drawn and forced Polk out of her vehicle. Polk, with the hospital discharge papers in one hand, protested the officers' aggressive behavior as they searched her and pulled C.D. out of her car. The officers then forced B.B. out of the back seat, ignoring his cries as his IV line was pulled. Officers also ignored Polk's pleas to let him go. One of the officers noticed the IV line on B.B. and said, "We are going to get sued." After searching them, the officers kept the three family members outside while they searched the vehicle. The officers eventually let them go, but didn't file a report or document the error. The officers said they'd received a tip about the car and that a male riding with Polk might have a gun. The Chicago Office of Emergency Management and Communication reports indicated no such call happened. Polk later texted Dent, believing he had caused the entire incident because he was angry that she repeatedly turned down his advances and saw her with a male in the car, even though that male was her teenage nephew. Dent replied, "Happy New Year." As a result of the incident, B.B. went to the hospital the next day and was hospitalized for a week for a misaligned IV line and other injuries. B.B. died roughly a year and five months later.