This is one of the most common pronouncements on race by liberal morons. It is also very easy to see that it is false. Eastern Asians have epicanthic folds. Sub-saharan Africans have prognathous jaws and a longer armspan-to-height ratio. They also have tightly coiled hair, whereas eastern Asians have very straight hair. These non-skin-pigmentation differences are just the tip of the iceberg.
Answer this, liberals: If races differ only in skin color, why can law enforcement determine the race of a corpse when only skeletal remains are left?
Anyone who really believes this must suffer from a severe form of mental retardation.