The burning buildings, smashed police cars and scuffles between police officers and angry protesters on Milwaukee’s north side over the weekend might have seemed like a spontaneous eruption.

But for many in the city’s marginalized black community, it was an explosive release decades in the making.

Milwaukee is one of the United States’ most segregated cities, where black men are incarcerated or unemployed at some of the highest rates in the country, and where the difference in poverty between black and white residents is about one and a half times the national average. There are barren lots and worn-down homes all over the predominantly black north side, while mostly white crowds traffic through the restaurants and boutiques downtown, or inhabit the glossy lakefront high rises.

Add to that the disrespect that many black people say the police show them, and many of Milwaukee’s African-American residents are unsurprised by the volatile response after a police officer fatally shot a black man on Saturday — even though, as it turns out, the officer also was black.