" Chains enabled another kind of violence to be done as well. Chains saved whites from worrying about placating this one’s mother, or buying that one’s child. Once the enslaved men were in the coffle, they weren’t getting away unless they found a broken link. For five hundred miles, no one had to call names at night to ensure they hadn’t run away. "

― , The Half Has Never Been Told: Slavery and the Making of American Capitalism