because that city is rigged.
There seem to be over 1500 security cameras in Chicago.
Why so many?
I can understand a bunch of traffic cameras, but this seems like overkill.
In general, I'm pretty wary of this level of government monitoring of citizens; I'd hate to be in the UK (especially London), where this sort of camera system is prevalent and everyone must have an ID card on them at all times.
Now, one might say that they have nothing to hide so they have no problem with these actions.
What if something previously legal becomes illegal? What if I do something that's legal but not fully accepted by society at large? What if for whatever reason the police has a grudge against me? What if I just want my privacy?
This sort of monitoring is ridiculous, and it can only stop with an outcry from affected citizens.
Otherwise, get used to some more Big Brother.