If you want to compare the CSA and blacks to Jews and the Reich... then you are comparing the CSA to the Reich.
For example, slavery in the CSA is kind of a red herring. The CSA never really had its own political existence. Southern slavery is USA slavery. And when the CSA declared itself, it simply re-adopted the existing USA system in its Constitution.
And FWIW, there were more free blacks in the USA "south" than in the "north." In the Third Reich, sooner than later, there were no free Jews at all.
As to slavery,
Black slaves in the southern USA multiplied from about 800k near the end of the importation ban to more than 4 million.
Jewish slaves in the Third Reich would generally have been worked to death or killed.
You biased opinions have nothing to do with the facts.