There were any number of statements by Confederate leaders who talked about the necessity of maintaining slavery, and slavery was based solely on race in the USA. No white person in America was a slave in 1861. I am
not saying no whites were poor or suffering, but they were legally human, and not property that could be bought and sold. Supreme Court Justice Tanney said in Dred Scott, that "a black man had no rights a white man was bound to respect."
Personally, I don't want to get involved in politics or racial discussions. I did enough of that here for years, but the unwillingness to acknowledge that defending slavery was at the heart of the Confederate cause is just dishonest playing with words.
All the talk of states rights and not backing down meant nothing without slavery as its motivation. Remove slavery, and there were no issues powerful for a Civil War in America.