Today's left echos the argument of the slave states on the founding documents

Steven Hayward:

... the popular leftist attack today on the American Founding and especially on the Declaration of Independence is ironically the exact same argument the southern defenders of slavery made in the 1850s. Stephen Douglas explicitly argued that Jefferson only meant white English men in his phrase “all men are created equal,” while other slave apologists called the Declaration a “self-evident lie.” But as most liberals today are historically ignorant, they are unaware of their affinity for the slaveholders’ position. (Or, you could say that the Democratic Party really hasn’t changed much since the 1850s. . .)
...
... Harvard’s Jill Lepore, who writes frequently in The New Yorker and elsewhere, and who has a large new book about American history just out titled These Truths. In a recent interview with the Chronicle of Higher Education (in which among other things she dissed Howard Zinn),  Lepore throws in with this:

The whole Lincoln-Douglas debate in 1858 comes down to Douglas saying, Our forefathers founded this country for white men and their posterity forever. And Lincoln, following on the writings of black abolitionists like Frederick Douglass and David Walker and Maria Stewart, says, No, that’s just not true! Lincoln read in the founding documents a universal claim of political equality and natural rights, the universality of the sovereignty of the people, not the particularity. Anyone who makes an identity-based claim for a political position has to reckon with the unfortunate fact that Stephen Douglas is their forebear, not Abraham Lincoln or Frederick Douglass.

...

Hayward is right.  The Democrat Party is still pushing racist nonsense.  They now try to couch their racism under the mantle of identity politics and "intersectionality."

The Left’s Intersectional Identity Politics Are Racist, Sexist, Anti-American Lies

Not only is the intersectionalism lens incredibly boring, it also often produces one-dimensional or outright false assessments of motivations and actions.