its the narcissism of small differences. its a studied effect. they hate people that are slightly different from themselves, but have sympathy for people who are too different from them for them to project themselves onto them. this is why liberals will go to africa to dig a well but step over a white homeless veteran and think they're a good person. its also why the most bitter ethnic hatreds are between groups that are almost identical.  essentially, people who exhibit this behavior should be put in a big pot and boiled into useful substances for industry.
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