I live in a very racially diverse area, with a huge population. I have seen adults and children of all races that most likely have Down Syndrome, although there are probably more around this area that are white/Caucasian, simply because of the percentages of each of the different ethnic backgrounds: higher percentage of whites, almost equal number of hispanic (in this area), then black, then Asian, then other.
I think this little cutie is most likely an Asian Baby
The little sweetie on the left looks to be part white, and part black
The little lady on the left is Non-white
The little fellow on the left appears to be Hispanic or Latino
I just had to put This Picture up because this little sweetheart is just so darn cute : )