Here is another amusing excerpt from Inhuman Bondage:
“Much of this hostility to emancipation in any form arose from the widespread white fear that if blacks were released from the surveillance of bondage, their crime rate would soar and the costs of their maintenance would be transferred from their owners to the taxpayers responsible for what we would call local welfare.”
Once upon a time, there was a theory of the Black Undertow in the Northern states. It was a speculative notion. It was a destructive future possibility that might arise following the immediate abolition of slavery, as opposed to a plan of gradual emancipation coupled with colonization.
Crime might soar. Property values might decline. Businesses might close. Schools might be ruined. The political system might be corrupted by permanently aggrieved black voters. Taxpayers might have to assume the financial burden of providing for indigent free negroes.
Note: Under slavery, the Black Undertow was effectively privatized. Masters were responsible for the welfare and behavior of their slaves. They also had the power to compel their slaves to labor on their plantations and produce valuable agricultural commodities (cotton, rice, tobacco, etc.) that contributed to the prosperity of the country.