Nancy French pointed me to this great video that illustrates the sort of comments you get from people when you are out and about as a multiracial family (often, but not always, an adoptive one). Been there, heard that.
Like I said before, the point of this is not to throw a pity party for adoptive parents. Any discussion of transracial adoption shouldn't be all about the adoptive parents' feelings. Rather, calling this sort of thing out is about (1) preparing parents to deal with such situations in a way that's constructive for their kids, (2) whistling past the graveyard — a sharing of the experience, and (3) laughing about the brokenness and general asshatitude of humanity.