It’s worth pointing out, the Confederate states actually opposed state’s rights. Part of the articles of secession were based on the federal government’s failure to enforce federal law in states that did not return escaped slaves. The southern states controlled the legislature, and states like Wisconsin and New Hampshire wanted to exercise their states’ rights to free black people from slavery. Lincoln didn’t even make emancipation a priority until two years into the war, and even then it was only in the states that tried to secede.

“State’s rights” became a conservative cause celebre during the civil rights movement when federal law was used to force southern states to integrate. There is nothing inherently conservative or progressive about states vs federal power, and it changes depending on who holds power where.

People who want to make the Civil War about state’s rights vs the federal government overreach are confusing two different eras of racism.