"Whole streets flipped from white to black, almost overnight," Casey-Leininger said. "Real estate practices of the day were largely unscrupulous."
One method was known as "blockbusting," when an agent or lender would start a rumor that a black family was moving onto a street, that whites were moving out and homeowners should sell to avoid plummeting property value. Real estate listings in The Enquirer in 1954 advertised homes for sale in Avondale as "Colored Man's Dream" and "Unrestricted."
http://m.cincinnati.com/enquirertopnews/article?a=2012303190016&f=880