On the contrary, that one scene alone gives every good reason to believe it and I'm beyond tired of all these excuses.
It's actually fairly common for parents who adopted children from other racial groups or cultures to transmit a certain amount of prejudice to their children. It can cause problems. No one's contesting that.
But that is a far cry from your claim that it's the same thing as "brainwashing the child into self-loathing bigotry."
It seems to me you're under the impression that it's impossible for someone to be a scumbag if they were mistreated.
No, I just know that there's a big difference between what we saw and what you're claiming.