Blacks very lucrative, which is why hundreds of White men were hired by these states as police officers. Their primary responsibility was to search out and arrest Blacks who were in violation of Black Codes [Virginia also had Black Codes that made certain conduct criminal only for Black people.].
Without the labor of blacks in America, the cultural and economic history of this nation would be vastly different. Edward E. Baptist, professor of history at Cornell University, relates in sharp relief the history, context and continuing impact of slavery and its powerful impact on U.S. economic, social and political life in his book, The Half Has Never Been Told: Slavery and the Making of American Capitalism.