I'm sorry I'm trying to follow your argument here. Are you saying that because you have never been carjacked or mugged in the loop that it has never happened to anyone else? Or that because you had one rapid response by the police that all police responses are rapid?
I grew up in Chicago, many of my family and friends still live there. I would categorize your experience as both atypical and extremely privileged. You should hesitate before extrapolating.