diplomatic: Have you been to Asia for any period of time? I have been to many of it's countries(Most for only a couple months or so but we didn't do the tourist thing, we stayed in one or two areas) with a lebanese friend who speaks Mandarin and Korean(Did the teaching thing in Korea and learned Mandarin growing up) . It was great and disturbing at the same time, my friend was like a spy for us. I have to say that those signs that was posted up earlier was true and it is in many countries in Asia(Thailand mostly), however the very rude and disturbing comments we got wherever we went soured me on the whole continent a bit(They would always insult us in their language, sometimes to our face and especially at my lebanese friend who showed great restraint). We didn't speak Thai, Japanese, etc... so we never knew if there was insults but the favoratism of the nationals was there, as it is in any 3rd or second world country really(Double pricing minus Japan).
I would like to say though that there were many great people there that treated us well, even when they knew they weren't getting any of our money. It's just that the amount of bad experiences we had, especially when one of us spoke the language, that really surprised me. Of course if we didn't speak their language and never knew what they really thought of us behind our backs we would have thought those people were the nicest we've ever seen(I never experienced this in West or North aftrica, in the middle east(Jordan and Lebanon), or in India) nearly as much as in Asia.
Also I don't get the black coffee thing. I'm from Canada and we use that all the time. I also have been to the states hundreds of times(Live 10 min from the border) and everywhere I went black cofee is the norm because, well unaltered coffee is black. Didn't matter if it was in a black majority area in the south or the west coast or NE, nobody or any race gave me **** for saying black coffee. Maybe I'm just lucky or maybe I just missed all the people sensitive to this subject like you did with the asians(Although I really don't see how you could).
America may not be perfect but it is decades ahead of Asia and most of the world in terms of racial tolerance.