In the 1960’s, fighters of urban freeways often made the point that new freeways were often “…white men’s roads through black men’s bedrooms” as well as being “slum clearance” (sic). The tendency of freeway planners to plot their lines through the least expensive areas, such as black neighborhoods, still shows up in concrete 60-70 years later. And neighborhoods next to freeways often are the least desirable, and most polluted even today in 2020.

https://www.latimes.com/opinion/story/2020-06-24/bulldoze-la-freeways-racism-monument