If this is so well known by the lawyers, how is it that nobody is taking the police to court? Are the lawyers afraid of the police?
Chicago is among the more notoriously extra-legal government zones in the US. I'd call it a municipality, but that doesn't do justice to the machine that is Chicago. It's essentially run by a powerful, unaccountable government-criminal-corporate organization structure, and has been for a century or more.
It's incredible that someone as patently deranged as Richard Daley was allowed to run Chicago for 22 years. I'm still bitter about Meigs Field.