Not sure if this breaks the 20 year rule, because I'm not sure when/ if the things that caused Detroit's current state happened.
hi! there's always room for more discussion on this topic here, but fyi, there have been several good threads on Detroit, and the general topic of "white flight" and deurbanisation in the US
What led Detroit to the state it is in today? <-- includes links to loads more posts -- check them out!
Is this Redditor's "Best-Of" comment about the history of Detroit accurate?