In the fantasy world I'm working on, humans are essentially colonizers and have a negative view of anything not human or dwarven (and even dwarves are beginning to get nasty looks). I remember a question posed in 'to kill a mockingbird' for which actually I would very much like an answer. There was a teacher who was against Hitler's antisemitism and yet supported racism against black people, Scout asks Jem about it but because he was so upset about the trial he doesn't bother answering. I actually very much so would like the answer to that. In my setting, humans are simply unsympathetic and inhumane against all other races in the world, and at first I was going to go with propaganda having been spread against other races. Now on the other hand I'm seeing an opportunity to explore a venue (an avenue?) I would've much preferred to go with in the first place, but have no idea how to realistically explain it (as one of the viewpoint characters thinks nothing of killing non-humans or their children). These would be folks who could be so kind and wonderful to one another yet so absolutely inhumane against all others. You even had folks like Columbus who saw native americans and believed they were nice people and in the SAME letter where he spoke on that (if not the same sentence), he mentioned how it would make them easy to control. I can't understand how folks see goodness and see it as an opportunity for wealth and slaves rather than 'we have discovered another people, and they are a wonderful people'. I also want to go ahead and say, I'm not opening this so we can just rant on racists and such, I honestly need helpful understanding on the matter so I can bring the characters in my book to life, heh.