That's Dearborn, bro.
The Hispanic community in Columbus is much larger then any I've seen in Detroit.
The percentage of black people in Detroit far out-weighs any other segment. Without looking at cencus numbers, I'm willing to bet it's 80-90% of the population in Detroit. "Plenty of white people" live in Birmingham, Rochester, Troy, Novi, etc. Not the D. Comparing Detroit to Novi or Rochester is like calling Delaware Columbus.
Segregation is not who makes up the population, but how the different ethnicities interact. The UP is mostly white, but the areas around Detroit have very diverse populations that don't nearly interact as much as they do in Columbus. The racial tension here is only fueled by a mayor that incites hate and resentment towards people in the suburbs. You should have heard some of his campaign speeches.
After living in Flint for 4 years and being around Detroit for a while I am unfazed by ~90% of Columbus.