This is why multiculturalism will never work. People are most comfortable living and working with similar people who look and think in similar ways. It's human nature and no amount of diversity brainwashing can overcome it. Clearly she rightly feels like an outsider in the white male group and even would if every white man made the maximum effort to be "inclusive". And the white men naturally felt uncomfortable with a black women in the group. In the current political climate it's not possible for people to admit their true feelings on the matter without being instantly labelled an "ist" (racist, sexist, etc.) but we can only go on denying human nature for so long...