Post-slavery racial inequality functioned to protect the myth of American exceptionalism

Evidence

This ideology did not simply disappear once slavery ended. If the formerly enslaved and their descendants became educated, if we thrived in the jobs white people did, if we excelled in the sciences and arts, then the entire rationale for how this nation had allowed slavery would collapse. Free Black people posed a danger to the country’s idea of itself as exceptional in its creed of freedom and equality; they held up a mirror into which the nation preferred not to peer. And so the inhumanity visited on Black people by every generation of white America justified the inhumanity of the past and the inequality of the present. — Nikole Hannah-Jones et al., The 1619 Project, 161

Categorization

• DEEPTHINKING: A dense causal mechanism: continued inequality was causally necessary to preserve the nation’s founding self-image — the ‘mirror’ metaphor grounded in the need to keep the origin story coherent.
• XREF: Directly embodies the reader’s core distinction — deviation vs design — where ongoing inequality is design, not deviation, from the founding creed.