I don't know any IRL but this one white girl I follow on tumblr who has this sex toy/BDSM/fashion related blog's family has an adopted black kid in it.
Her blog is a cringeworthy and almost scust worthy combination of half-assed faux social media social justice worker activisim, piss poor white liberal guilt and fake concern for black people and little to no people of black people except as victims , and mostly pictures of white people having graphic sex and #ANTISLUTSHAMING white feminist championing LBGT trisexualness that could only come from San Diego, CA.
I'll admit, she posts good stuff, but that's person who I can seriously stare into their eyes and say without a pause "I don't respect you".
I just personally can't stand when white people pretend to care about black people and feel we should be grateful to them for acknowledging our existence as if that's some hard task.