[tetrep]

There's a lot of differences between the US and France that result in different suburb/city situations, but I think "white flight" and "redlining" cover a decent chunk of it:

https://en.m.wikipedia.org/wiki/White_flight

https://en.m.wikipedia.org/wiki/Redlining

[anon291]

recently though white flight (if we refer to the general progression of people to suburbs away from cities) is dominated by people of color. Suburbia is basically about as representative demographically as the rest of the country at this point.