This is quite a long article, but I hope you all will read it.

[erronis]

19. I'm working through the whole article and am amazed that so many Democrats signed the Southern Manifesto

And a great many did not. Leaders of the slaveholding South called the Declaration “a most pernicious falsehood.” South Carolina’s John C. Calhoun called the very idea of equal rights a “false doctrine.” They believed in democracy, but only if it was an exclusively White democracy. When democracy turned against them in 1860, they rebelled and sought an exit from the system. That rebellion never ended. It has been weakened, suppressed — sometimes by force — and driven underground, but it has never gone away. Although the South was militarily defeated and deprived of its special advantages in the Constitution, its hostility to the Founders’ liberalism did not abate. As Southern writer W.J. Cash observed in 1941, if the war had “smashed the southern world,” it had nevertheless “left the essential southern mind and will … entirely unshaken” and Southerners themselves determined “to hold fast to their own, to maintain their divergences, to remain what they had been and were.” In 1956, almost a century after the Civil War, a fifth of Congress, almost all Democrats — signed the “Southern Manifesto” calling on states to refuse to obey the Supreme Court’s 1954 decision to end segregation in public schools. Nothing had changed. Are we so surprised that for many Americans, nothing has changed even today?

Nor has anti-liberalism only been about race. For more than a century after the Revolution, many if not most White Anglo-Saxon Protestants insisted that America was a Protestant nation. They did not believe Catholics possessed equal rights or should be treated as equals. The influential “second” Ku Klux Klan of the 1920s was anti-Catholic and anti-Jewish as well as anti-Black, which was why, unlike the original Klan, it flourished outside the South. Many regard today’s Christian nationalism as a fringe movement, but it has been a powerful and often dominant force throughout America’s history.

Of course these were southern Democrats back in the '50s where party allegiances were murky.