I'm curious why you think this....if "bigoted" ideas are delusional, shouldn't the fact that we have far more integration and exposure to different sub-cultures in sufficient time eliminate all bigotry, as it will eventually become self-evident that there are in fact no differences between people?
And if not, what might it be about this sub-group of people that will never ever "get it" - what's different about them that they simply can't?
And if not, what might it be about this sub-group of people that will never ever "get it" - what's different about them that they simply can't?