Elliott Jaspin of Cox News Service used Census records dating back to the Civil War and years of research to document "America's Hidden History of Racial Expulsions":
Beginning in 1864 and continuing for approximately 60 years, whites across the United States conducted a series of racial expulsions, driving thousands of blacks from their homes to make communities lily-white.
In at least a dozen of the most extreme cases, blacks were purged from entire counties that remain almost exclusively white, according to the most recent census data.
Some of the places Jaspin highlights in "Leave or Die" are in Kentucky and Indiana:
Marshall County, Ky., where in 1908 vigilantes led by a local doctor posted notices telling blacks to leave. More than 100 armed and hooded men raided the town of Birmingham, picked about a dozen people at random and tortured them. An elderly black man and his two-year-old grandchild were killed. Nearly two-thirds of the blacks left. ...
Laurel and Whitley, neighboring counties in Kentucky, where in 1919 whites, believing that the arrival of a black railroad construction crew had spawned a crime wave, rounded up blacks at gunpoint, herded them to the train station and forced them to leave. ...
Washington County, Ind., where blacks were driven out between 1864 and 1867, apparently by whites alarmed that the Emancipation Proclamation could allow blacks to vote and become full citizens. Two black men who did not leave were killed. ...
Vermillion County, Ind., where in 1923 the then politically powerful Ku Klux Klan drove the expulsion of blacks from the mining town of Blanford after a white girl said she was assaulted by a black man.