Hi, Chicago resident here. The CPD is under a consent decree that they do not follow, their officers have rioted against protesters and stood by watching looting occur, and every year they incur tens (if not hundreds) of millions of dollars of debt for the city and it's taxpayers for police misconduct settlements. So yeah, I think it's fair to say CPD is lawless.

As for your assertion that "rampant lies and misrepresentations" caused the decline of the police profession, the idiom isn't "criticism of the apple barrel spoils the whole bunch." The police do damage to their own reputation by not removing the "bad apples," moreso than anybody who critices the police.