No, it was racist southern whites that were against the abolishment of slavery and civil rights. Are you saying that the current republican party has more in common with Northern whites, (because those were the predominant republicans at the time of the Civil Rights movement and abolishment of slavery) than Southern whites?
The current Sothern white republicans are the same ones who protested when southern states started removing the Confederate Battle flag from statehouses and memorials for confederate leaders; and yet they claim to be the real champions for the end of slavery and civil rights...GTFOH. You don't even want kids to learn about slavery in school now and pretend to be some champion of racial equality.