Furthermore there were mob related indictment as recently as 2006 and Detroit still has a relativity tight nit Italian community and a little Italy, unlike Milwaukee.
Eh? Can you explain what you're referring to here? There's no longer a Little Italy area within Detroit proper. Detroit has about a 10% Caucasian population, most of whom are "Anglos" descended from people who moved up from the South, a few "hipsters" and Middle Easterners. There are likely still some Italians but most have assimilated and/or moved out to the suburbs long ago.