Privilege and race. Of the 235 homicides so far this year in Chicago, just 10 of the victims were white: https://www.chicagotribune.com/news/breaking/ct-chicago-homi....
Likewise, a lot of the health issues are the result of poor nutrition, lead paint, and lead in the tap water. Middle class people live in more recently renovated houses, have more grocery stores nearby, and can afford water filters or bottled water.