> Even after that we have had, and even continue to have, economic segregation.
A lot of real-world economic segregation is directly linked the housing market, and then the leftists actively support it. When policy choices are adopted such that the market threatens to reduce the amount of segregation that a city or neighborhood is subjected to, leftists call that development "gentrification" and scream in protest against it.
Gentrification doesn't reduce segregation, it just moves the boundaries of the segregated areas.
Poor people mostly rent because they can't afford or can't get a mortgage. When an area gentrifies those people are forced out because the rents rise, and wealthy people move in. If you just look at the income distribution in the area it looks like "the population" became wealthier, but if you look at the individuals you find that the old residents have been forced out, and generally wind up poorer because of this (social networks disrupted, work further away etc).
> A lot of real-world economic segregation is directly linked the housing market
Yes.
> ... and then the leftists actively support i
No, they don't.
Liberals (which really means neoliberals) support it. Here's a helpful diagram:
<--------- Left ------ Center ------- Right ------------->
+-------------------------+------------------------------+
} Cares about People | Cares about Property |
+-------------------------+------------------------------+
| Leftists/Progressives | (Neo)liberals |
+-------------------------+------------------------------+
| Socialism | Capitalism |
+-------------------------+--------------+---------------+
| Materialism | Idealism |
+-------------------------+--------------+---------------+
| | Democrats | Republicans |
+-------------------------+--------------+---------------+
Actual leftists want everyone to have access to affordable housing and realize that landlords are anathema to that. Leftists believe in "social housing", which is the government providing a significant portion of housing stock to guarantee shelter.
Leftists also generally believe in "personal property" not "private property". That is, you can own your own home but you can't hoard housing.
How successful NIMBYism is in the US just shows you how normative right-wing attitudes are. done
A lot of real-world economic segregation is directly linked the housing market, and then the leftists actively support it. When policy choices are adopted such that the market threatens to reduce the amount of segregation that a city or neighborhood is subjected to, leftists call that development "gentrification" and scream in protest against it.