I have a couple. I have known them for a long time.
But an Australian friend who lives overseas has mentioned a friend of hers in several emails. The friend is American. We shan't hold that against her. Some of my best blog mates are American (that is irony for you Americans, who apparently don't get irony, or so we are told). Our friend recently sent us pictures of herself and her American friend when they were on a road trip. We were surprised to see that our friend's American friend was of 'Asian appearance', a term favoured by our local police force.
Our friend had never mentioned this, and why should she? Her friend is American. That is all we needed to know isn't it? We can label her and stick her in a metaphorical box with her just being American.
Is it racist that I now think of our friend's American friend in a slightly different context? I don't think it is. It does tell me that she may well have a different background to the one I imagined. Should our friend have mentioned this? Not sure. Essentially it makes now difference. She is American, and they come in all shapes and sizes. Whadda ya reckon?
Later edit: How nice. A mention. What is it like to be a visibly non Anglo in an Anglo dominated country? AdRad gives you a couple of examples.