https://www.citylab.com/perspective/2019/08/square-expansion-st-louis-demolition-blight-vacant-dorsey/596299/

Geographer Neil Smith warned long ago in his book The New Urban Frontier that gentrification is not a process where all of a place becomes overdeveloped and most housing becomes overpriced for working people. Instead, Smith noted after studying American patterns, the high valorization of some neighborhoods required the depression of others. While Detroit continues to lose population, its central corridor from downtown to Wayne State University has seen tremendous re-valorization and reversal of decline. Post-bankruptcy Detroit has become two places: a small and very hip renewing area, and a larger, poorer area where demolition remains the city’s primary instrument of social compact.