At the turn of the century in 1900, a clever black man found a way to profit from racism.
J.D. Bowser, a Kansas City principal at the Attucks School, would buy houses next to white people in "aristocratic neighborhoods" and move in and only sell the houses for "exorbitant profit" to his white racist neighbors who wanted to get him out of the neighborhood.
The clip below reports on his being put on trial before the Board of Education for his activities.
Bowser's heroic defense was to claim that he had a right as a free born American citizen to live where he pleases and to sell his property at whatever price he could find a purchaser willing to pay.
Also see: More on J. Dallas Bowser