hi! there's always room for more info on this topic, but you may be interested in previous discussions here:
Why were the Late 70's/Early 80's a low point for many American cities?
What happened in Detroit that made it what it is today?
What are some pivotal events in the decline of Detroit?
What led Detroit to the state it is in today?
about Chicago and Detroit...
Did America have any blighted/depopulated cities (like how Detroit is today) during the 1950s? Cairo, Illinois seems like one example; are there any others?
Was New York of the 1970s the shithole movies make it out to be?
Detroit during WWII
How much was "white flight" influenced by racial violence (riots, terrorist attacks)?
Why did suburbs in America develop differently than those in Europe?
Was there ever any equivalent to "white flight" in Europe?