Did some research and don't know if this is a "chicken or egg" situation, but here is an example of the racial tensions from a suburb of Milwaukee in October of 2015:
Bucks player John Henson claims he was racially profiled at Whitefish Bay store
From the way it was explained, the Milwaukee area is pretty segregated along fairly understood lines of demarcation, with overlapping "grey" areas that everyone seemed to generally get along in. I was staying in one of those areas and it seemed nice and had no issues with anyone.
What appears to be the issue is the high-crime and gang areas are now being pumped up by the BLM and other race-hustlers to try to stir something up prior to the elections (my opinion). The words out of their own mouths show their intent and lack of understanding of what their actions are doing to the relations that otherwise seem okay. Burning down businesses in your own back yard (if it is indeed your back yard) shows the lack of regard or outright stupidity of the perps....
I saw if picture of the BP burned with the owners looking at the damage. Appeared to have the sort of headdress Indians often wear. Do they not know what happens in these areas when they but businesses or they don’t care?