History and science are messy, it's when people try to make them

nice and uniform that things get nasty.  For instance,
Numerous thinkers, black, white, and other, have successfully, repeatedly, debunked the legacy of slavery argument.  Without regurgitating their arguments, though, I’d prefer instead to consider a conveniently neglected part of the history of slavery in the New World, that part of the past that involves white slaves.  After all, if the enslavement and oppression of their ancestors explains the high rate of criminality among blacks today, then, presumably, it’s true as a general principle that slavery and oppression ultimately lead to criminality.  But if this is true, then the enslavement and oppression of whites of yesteryear should’ve led to marked criminality among today’s whites. 

No such criminality is to be found.

Yet before there were black slaves in the Western hemisphere, there were white slaves.
You can make SJW type just about foam at the mouth with this.  Why?  Because idiots have had the teaching of them for decades:
I started giving quizzes to my juniors and seniors. I gave them a ten-question American history test… just to see where they are. The vast majority of my students - I’m talking nine out of ten, in every single class, for seven consecutive years – they have no idea that slavery existed anywhere in the world before the United States. Moses, Pharaoh, they know none of it. They’re 100% convinced that slavery is a uniquely American invention… How do you give an adequate view of history and culture to kids when that’s what they think of their own country – that America invented slavery? That’s all they know.
And when you bring up contradictory information- hard, provable facts- either it doesn't matter(and you get called a racist), or "That's different, not the same thing at all!"


And the sciences are no better, in that this 'settled science' bullshit is horrible:
Zharkova and her team of researchers released a study on sunspot modeling, finding that solar activity could fall to levels not seen since the so-called “Little Ice Age” of the 1600s. Zharkova’s conclusions may have huge implications for global temperature modeling, but her analysis is not accepted by some climate scientists.
“Some of them were welcoming and discussing. But some of them were quite — I would say — pushy,” she told The Global Warming Policy Forum (GWPF) in an interview on her solar study.
In fact, Zharkova said some scientists even tried to have her research suppressed.

“They were trying to actually silence us,” she said. “Some of them contacted the Royal Astronomical Society, demanding, behind our back, that they withdraw our press release.”
Anyone trying to do such to research that doesn't match what they want to hear is not a scientist, they're a religious fanatic.  Which brings me to a quote:

Jerry Taylor of the Cato Institute tells a story about Julian Simon, the late and great economist.He was at some environmental forum, and he said, “How many people here believe that the earth is increasingly polluted and that our natural resources are being exhausted?” Naturally, every hand shot up. He said, “Is there any evidence that could dissuade you?” Nothing. Again: “Is there any evidence I could give you — anything at all — that would lead you to reconsider these assumptions?” Not a stir. Simon then said, “Well, excuse me, I’m not dressed for church.”

I love that story, for what it says about the fixity of these beliefs, immune to evidence, reason, or anything else.

History needs to be taught HONESTLY, warts and all, with a bias neither for nor against: FACTS.
And science MUST be taught, and done, honestly, or it's not just worthless, in some cases it's an actual threat.