I have always wondered why it happens so often - not Singaporeans getting lower priority when they are served, but people complaining about such incidents. Just the other day a colleague complained that the person sitting next to her (with golden hair) on a flight had received more attention from the stewardess who explained in great detail what the lunch menu was ...the stewardess turned to her and simply asked "chicken or fish". I told her that when the stewardess was explaining the menu to the other passenger she could also hear so there was no point for repetition.
I hope Singaporeans don't become overly sensitive to such incidents. Many of these incidents can be logically explained and have nothing to do with race or skin color. The woman who happens to be Caucasian might have been a regular customer at the supermarket and hence given higher priority.
By now, I think most people have understood the concept of a genetic eve that humans are more similar to each other than any other mammals. If you take two chimps, the genetic diversity is far larger than two human beings. Skin color is the simplest of mutations and although it gives the impression that someone is different from you it is only psychological. Human beings who have lived in Singapore for 40 years are more similar to you in behavior than someone of the same skin color from another country. Being Singaporean, we have more in common in terms of behavior than being Chinese, Indian, Caucasian or Malays.