Even the most radical white abolitionists, basing their opposition to slavery on moral and humanitarian grounds, failed to understand that the rapidly developing capitalism of the North was also an oppressive system. They viewed slavery as a detestable and inhuman institution, an archaic transgression of justice. But they did not recognize that the white worker in the North, his or her status as “free” laborer notwithstanding, was no different from the enslaved “worker” in the South: both were victims of economic exploitation. [...]