IN LEFT-WING THOUGHT, there’s always been a powerful emancipatory possibility associated with understanding the past; the specific opposite of false consciousness is historical consciousness. To see yourself in time is to grasp the way the world is in flux. Anyone who has ever done any kind of political organizing learns this intuitively: the work of mobilizing is always in urging people to un-forget, to see how their circumstances came to be, how others responded to similar circumstances, and how they might also—now, today. To engage in political struggle is necessarily to do history. Multiple rounds of upheaval in the historical profession since the 1960s—accompanying political upheavals at large—have sharpened this weapon in the hands of the left.

But like everything else, historical interpretation must live in time. Any understanding of history, articulated in the terms of its own age, eventually fades. The inescapably engaged nature of historical inquiry is why for Genovese, writing at midcentury, the slaves mapped onto the docile Western proletariat while slaveholders looked something like the captains of late-Fordist industry, doling out high wages and benefits to keep the lower orders in line. And why for Johnson, trying to give expression to how the past looks from our own moment, the slaves look like the policed, starved, terrorized underclass of global capitalist enterprise; and the slaveholders, or more properly “slave society,” become practically everyone who buys into this world order. Whether the leaders of neoliberal capitalism or the average beneficiaries of cheap commodities—who have something in common with the “poor whites” that planter ideologues hoped to win to their side by making the slave empire large enough to benefit white people across class lines—the white race as such appears out of the shared experience of imperial bounty. Slavery as we’ve come to remember it is the ideological residue of this social order, a memory recycled and processed into a romantic form, in order to quiet contemporary anxieties of dominance.

The enlightening, progressive force of liberalism has carried us far from slavery, we like to think. We are not those people and never could have been. In River of Dark Dreams, we are reminded that between the slave empire and our own age lies only a handful of generations. Johnson shows the historical meaning of this proximity. We are connected not just through the shortness of time but through the persistence of the liberal capitalist tradition itself. The form of freedom fantasized by the slaveholding South, in turn, is the freedom of our own society: ensuring a standard of living sufficient to confirm our self-image and limit domestic conflict; built upon ecological degradation, the conquest of darker nations by international bureaucracies, their enslavement by debt, their forcible integration into a global commercial network; enforced by our own armies of the night, surveilling, killing, torturing without oversight. The myth of our great distance from slavery—of the old South’s fundamental illiberalism—exists precisely to give us a way of managing our experience of this continuity, and to let us continue to enact it.