“How does what they believe differ from what Northerners who actually fought the war thought for decades afterwards?”
That is part of what is being rewritten.
“Maybe what you believe is the “filthy” revisionist claptrap, whether it was fabricated a century ago or just a few years back by people who wanted to distort the truth.”
No, not even maybe. I’m old enough to remember history before it was rewritten.
Happy 150th birthday!