Not only is the picture presented highly inaccurate, but it is not presented in light of the pre WBTS political climate, nor within the social context of the day.
Socialist teachers and their dupes are being used to further foment divisiveness in our culture by teaching our children a grossly oversimplified fable in lieu of history.
The root of the war is economic, slaves were only a part of the overall economic reasons the South chose to secede.
That Robert E. Lee, West Point educated and offered command of the Army of the Potomac, chose instead to fight for Virginia, perhaps knowing full well that his family lands would be forfeit (now Arlington National Cemetary) bespeaks the conflict of loyalties present. That he is reviled by some as a traitor only indicates which side won.
Many patriots were hanged as traitors during the Revolution, and are only well-remembered because their side ultimately prevailed.
But who was the stereotypical slaveholder? A wealthy, white, southern landholder. The portrait that it was a "white Southerner fighting to keep slaves picking cotton" is not altogether correct. Most of the soldiers in the Southern cause were not slaveholders at all. Most of the primary members of the CSA government and the movers behind secession, on the other hand, were proponents of slavery. You can read it in their speeches. You can see it in their "constitution." It is amply recorded in their letters.
I agree with you that American history is being destroyed by the socialists, liberals , and the PC crowd. I have been careful to differentiate between the real military leaders in the CSA, and the politcal leaders. They were a different crowd and had different motivations. Only a few, such as John Breckenridge, spanned the gap between the military and the political realms. In my mind, Robert E. Lee, Thomas Jackson, and others, were military men of principle, even if their motivation is seen, in retrospect, as wrong. On the other hand, the political leaders, such as Davis, Rhett, Toombs, Stephens, etc, were very much traitors.
One last point. The land which is now occupied by Arlington cemetary was the inheritance of Mrs. Lee. Robert E. Lee never owned it, as I recall.