The division is segregation, not conservatism. That being said, I find Milwaukee to be more conservative than some Wisconsin cities, especially Madison (where I live now).
As you and others have said, the segregation there is really shocking. I grew up during the heyday of personalities like Alderman Michael McGee (Sr; I was out of the state before his son was elected) when there was talk of the black areas seceding from the city entirely: http://news.google.com/newspapers?id=yGcaAAAAIBAJ&sjid=o...
The MPD has a rather, uhm, spotty record with the minority community. I don't know the state of that these days, but the militaristic motif of this website definitely seems to hark back to the dark days of the Harold Brier years. Given their history I think they should be more careful about the tone they project.
I realize that the city elections are technically non-partisan, but there are clearly no conservatives in positions of power here.
The only cities Milwaukee would be more conservative than (in WI) would be Madison and possibly Racine. All you have to do is look at the results from the recall election to see that Madison and Milwaukee are the 2 centers of liberal votes.
That said, you are absolutely correct, the division is segregation, not conservatism. The overt racism against whites (by blacks) has gotten violent in the last decade. There is a large Hispanic population here too, while it does have Mexican gang problems, that part of the city is far far safer than the black parts. Lots of Hispanic business in Milwaukee are thriving, plenty of white people as customers. You won't see many whites on the north side unless they're cops.