Cities don't come out of nowhere, and demolishing a city block and rebuilding it disproportionately affects people of color. Yes, we need to make cities more a

Cities don't come out of nowhere, and demolishing a city block and rebuilding it disproportionately affects people of color. Yes, we need to make cities more accessible. But rather than discarding existing cities as un-accessible wastelands, it would be great (but harder!) to figure out how to retrofit existing buildings and sidewalks to be accessible.