Since you believe that there is but one race let me ask you this question before I write you off as a knucklehead. Please explain this for me. Perhaps you see something and know something that I have never seen or new in my 68 years of living. I always thought and saw that humanity was made up of many different races of people.
How do you biologically distinguish the physical differences between a Black American who is a descendents of slaves, Chinese man, Navajo Indians, and the Aborigines of Australia? Do you see and believe that these different races of people are one race? If these people are one race what is the name of that one race?
