A video of the rapper Kanye West discussing slavery is a sad reminder of America’s historical amnesia about the brutal realities of that institution. “When you hear about slavery for 400 years,” he said in the clip, which was widely circulated on Twitter, “that sounds like a choice.”

Mr. West seemed to suggest that enslaved African-Americans were so content that they did not actively resist their bondage, and, as a result, they bear some responsibility for centuries of persecution.

He’s not alone in his thinking. In 2016, the former Fox News host Bill O’Reilly asserted that slaves were “well fed and had decent lodgings.” Last September, the Alabama senatorial candidate Roy Moore deemed the antebellum era the last great period in American history. “I think it was great at the time when families were united,” he declared. “Even though we had slavery, they cared for one another.”

Modern scholarship has debunked such whitewashing, accurately depicting slavery as an inhumane institution rooted in greed and the violent subjugation of millions of African-Americans.