Anybody who went to school more than 20 years ago was taught that.
And let's not pretend all Nazis were tarred and feathered.
It was a bad answer.
I went to school more than 20 years ago, and the entirety of what we were taught in this area was that there was the Civil War, Lincoln freed the slaves, then Martin Luther King Jr. ended racism. This from well funded private schools.
Maybe if you were a history major in college you'd get more perspective, but man the whitewashing in primary education is just crazy.
And yeah, our biggest mistake was taking the boot off the Confederacy's neck after the war was won. The Compromise of 1877 was a disgrace.