Look Away Politically Incorrect Information on Slavery in the CSA, America, and World

[Crandar]

I would suggest it comes from Marxist historians who hate america.

And yet, your copy-pasted OP begins with a quote from Marx. As a side note, Marxist historians have a particular interpetation of history, which happens to reject imaginary notions, such as nationalism or religion, as somehow being meaningfully positive to society.

This is why, tribalists hate it, not because Marxism is anti-American or anti-CSA. In fact, Marxism rejects a common misconception that slavery was abolished in the industrialized North, because the factory owners were more compassionate.