Miscegenation, the practice of people of different "races" intermarrying is becoming more and more common world wide. In Canada, of course, this phenomenon is well known and brings possible benefits by widening the gene pool. Contrary to racist doctrine the concept of breeding "pure" races tends to lead to narrower and narrower bloodlines which can result in the perpetuation of genetic disorders. Just as importantly I expect, a society that contains large number of mixed races couples tends to be more tolerant and open minded. I could go on, but the details are in the article below, provided you have the patience to read it as it is rather long.
It's a wonderful, mixed-up world - Telegraph
It's a wonderful, mixed-up world - Telegraph