Is Slavery the Original Sin of Capitalism and Modernity?

Greg Grandin, Capitalism and Slavery, in The Nation:

Slavery created the modern world, and the modern world’s divisions (both abstract and concrete) are the product of slavery. Slavery is both the thing that can’t be transcended but also what can never be remembered. That Catch- 22—can’t forget, can’t remember—is the motor contradiction of public discourse, from exalted discussions of American Exceptionalism to the everyday idiocy found on cable, in its coverage, for example, of Baltimore and Ferguson.