Four: Add Chicago, LA, NO and just about any city run by Democrats.
I'll make one exception - North Chicago, IL (it is not part of Chicago). I had to go there on business and found the people to be very courteous and friendly. It is probably 99% black, middle class and very Christian. There are decent black folks as I'm sure we all know, just too bad they are such a minority and images of Chicago's south side dominate our view.
That would be 99% of all cities.