In-tribe mentality, really. Perfectly understandable, anthropologically speaking.
That said, I personally am not opposed to adoption of children of different skin colors, ethnicities, etc. At the same time, adoptive parents aren't always the admirable parents that some people make them out to be.
That said, I personally am not opposed to adoption of children of different skin colors, ethnicities, etc. At the same time, adoptive parents aren't always the admirable parents that some people make them out to be.