Every single state listed slavery and maintaining white control over other races as their primary cause for seceding

Indeed, historical documents such as South Carolina's declaration of secession explicitly mentioned the "increasing hostility on the part of the non-slaveholding States to the institution of slavery" as a reason for their departure. Mississippi's secession document was even more direct, stating "Our position is thoroughly identified with the institution of slavery--the greatest material interest of the world." Therefore, while some may argue the Confederate flag symbolizes Southern heritage, it's undeniable that this heritage is deeply intertwined with the institution of slavery. Do you think there is a way to remember and teach about this part of our history without causing offense or harm?