Block busting is what it used to be called. In 30 years the whole neighborhood will be a slum.
Block busting only works when combined with white flight. A neighborhood in the town immediately north of my township is an example. It is close by the local hospital, built in the 1950s and featured good quality homes. In the early 1960s a black doctor and his family moved in, and some nearby whites immediately sold, not bothering to wait and see what kind of neighbors they'd be. Investors jumped in to buy and suddenly a substantial number of homes were rentals. By the late 1970s the neighborhood deteriorated; renters don't tend to care for properties as well as owner occupants. More sales followed, and declining market values pulled in more investors.
While not quite a slum, to this day it is not of the quality at which it started.