Good essay. I pose this question though. If the human race as we know it originated in Africa, then why do we have different skin colors, and so many different traits between different "societies"? What caused the change? What else did it change? That's the question being posed. We are all unique, but not so unique as to change the fact that we all have brains, hearts, circulatory systems, etc. To ignore how different environments affect our genetic patterns is an extreme injustice to us as a whole. There may be one or two, because there always is, but for the most part I don't think anybody disagrees with you that racism is wrong. You're just very radical. One side says we're categorically different. You're saying we're all exactly the same. Two sides of a coin. There's a middle ground somewhere between the two perceived radical truths.
I don't think early man in his venture from Africa hit Asia and said to one another, "you have this skin color so you go East, you have this skin color so you go North, etc. It's pretty safe to assume (as it's still theory), that genetically, the cro-magnon man that left Africa shared many of the same genetic traits, derived from the same gene pool, and devoid of the vast mutations, that the extreme changes in environment would cause.
The idea that man originated in Africa is still only "theory". It's speculated that cro-magnon man led to the downfall of the neanderthal. So, the Norwegian is "exactly" the same as the Kenyan? Both originated from cro-magnon. According to you, that's a fundamental truth. Or rather, are Scandinavians unique within a certain gene pool?
Yeah, we focus on the immediately obvious too much. I'll agree with that statement. I think this question has asked not what each "race" is predisposed to genetically, but rather what each "society" is. If our physical appearance can be affected be genes, then is it not a good question to ask about what else is different.
Why do blacks have a higher percentage of sickle cell than whites (or can I use the terms negro and caucasian)?? Only through a discovery of where and why it existed in the first place can it be cured, or we can wait the thousands and thousands of years for it to be genetically mutated out. That discovery will only come from first asking the question, what is different.