Think redlining, but on a government level.
In my home city, blacks and whites on Section 8 housing were always separated. The nicer/newer section 8 housing was reserved for whites while the older houses scattered throughout the inner city (usually rent properties that were picked up in bank foreclosure bundles) were almost all black. They were even discriminating against allowing black homeowners to be a part of the section 8 housing program. In other words, you had a harder time being able to make your property a part of the section 8 program, if you were black. If you were lucky enough to get a nice house in a nicer area, local LEO made your life hell. Check excepts below for the receipts.
From the Atlantic:
The failings of Section 8 go far beyond flaws in how the program was designed to how the the states have implemented it. People can argue all they want about the merits of subsidized housing, but given that Section 8 exists, it would seem advantageous for states and municipalities to take advantage of federal funds to help families find better housing. But many states seem especially determined to keep voucher-holders in areas of concentrated poverty.
The whole idea of Section 8 in the beginning was that it was going to allow people to get out of the ghetto, said Mike Daniel, a lawyer for the Inclusive Communities Project, told me. (Daniel has sued HUD over the way it is carrying out the program in Dallas.) But theres tremendous political pressure on housing authorities and HUD to not let it become an instrument of desegregation.
Full article found here: https://www.theatlantic.com/business/archive/2015/06/section-8-is-failing/396650/
From the Antelope Valley Times:
According to the Justice Departments complaint, the cities of Palmdale and Lancaster between 2004 and 2011 initiated and teamed with the Housing Authority and the sheriffs department in a targeted campaign of discriminatory enforcement against African-American voucher holders in order to discourage and exclude them and other African-American from living in the cities.
Full article here: http://theavtimes.com/2015/07/25/community-group-speaks-out-on-2-million-settlement-of-section-8-discrimination-case/