I find that people... very few people think that what they're doing is bad, and usually the people who think what they're doing is bad it has more to do with guilt.
A people's literature is the great textbook for real knowledge of them. The writings of the day show the quality of the people as no historical reconstruction can.
I was lucky enough to occasionally break out of that racist situation that prevails in the Hollywood film production community. But it was racist then and it will always be that way. It will never be otherwise.