The American education system teaches us that fascism is bad, for some curious definition of fascism.
Where the Germans went wrong was in marching west towards Paris when they should have immediately moved east towards Moscow. What the Boers did wrong was to resist NATO-aligned finance capital, not to conquer the southern African states. Pinochet's greatest sin was failing to privatize the copper industry. Idi Amin's crimes begin and end with his hostility towards white people. Donald Trump is worse than George Bush and Ronald Reagan because Russia.
You're going to learn some very basic World History in your US public schools. It's going to teach that the Founding Fathers were right to secede from England because they valued Liberty. The Confederacy was wrong to secede from the Union because they valued Slavery. And the greatest human achievement in the 20th century happened when the Enola Gay visited Japan.
You're going to learn that America is Exceptional. And that means when Americans do some things at home or abroad, it's actually good even when a dumb-dumb who doesn't understand history might conclude it is very, very bad. We're always and forever De-Nazifying the world. Not like how the Russians are doing it, though.