That leaves out quite a lot. Back in the mid-20th century, the Fillmore was a thriving black community, with around 50k black residents in a relatively central

That leaves out quite a lot. Back in the mid-20th century, the Fillmore was a thriving black community, with around 50k black residents in a relatively central part of the city. The city, however, considered it "blighted." Too many homeless people, too much drug use, too much property and violent crime. And so the SF Redevelopment Agency decided to knock down a bunch of blighted Victorians, relocate the black population, and replace the Victorians with modern apartment buildings. That was the beginning of the end of African American SF. Obviously some relocated to other areas of the city, but just as many left for other pastures. Housing policies since then have hardly helped the situation, but YIMBY types need to understand the history of redevelopment both so they don't make the same mistakes and so they have empathy for when poor folks in a community are skeptical of their promised land.