This is only one of the many areas in which postulating the non-existence of God turns out to have seriously unpredictable ramifications. American rights are predicated on them being given by a Creator, in His absence, they do not exist. And there is absolutely no scientific evidence for equality of any kind:
Scientists, for instance, have recently identified small changes in DNA that account for the pale skin of Europeans, the tendency of Asians to sweat less and West Africans’ resistance to certain diseases. At the same time, genetic information is slipping out of the laboratory and into everyday life, carrying with it the inescapable message that people of different races have different DNA….
Such developments are providing some of the first tangible benefits of the genetic revolution. Yet some social critics fear they may also be giving long-discredited racial prejudices a new potency. The notion that race is more than skin deep, they fear, could undermine principles of equal treatment and opportunity that have relied on the presumption that we are all fundamentally equal.
Note the correct use of the term “presumption”. It is fascinating to see the way in which ideological equalitarians, including scientists, are reacting in precisely the way that they suppose the religious faithful will act when the scientific evidence appears to contradict their religious beliefs. “Stop,” they beg, “just stop.” And so much for that romantic notion that “many sociologists and anthropologists have argued for decades” about race being “a social invention historically used to justify prejudice and persecution”.
We are all equal before God. If God does not exist, then there is no such thing as equality. That is the reality.