Was Greece the birthplace of humanity?

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All we need is the dictionary definition.  This is from the online OED:In other words, both Greeks and Muslims can be described as races for the purposes of defining racism.  It isn't limited to Caucasians or Asians, for example.

In fact, in modern times, the idea of humans being divided into genetically discrete races is seen increasingly as an unfortunate mistake which has in fact led to racism.  As the ads for Ancestry.com demonstrate, our DNA is usually a mix of influences.  I remember seeing US a talk show that had a white supremacist on it and he agreed to a DNA test.  He had no fear because he was as white as white can be.  Yet the test showed he had a considerable African heritage and he was devastated.  Subsequently, he was shunned by other white supremacists

So are "race" and "racist" becoming increasingly meaningless when we really mean biased, prejudiced, judgmental, discriminatory, mean spirited, ignorant and plenty of other more meaningful words that can be applied to people callously abusing any number of different groups? I fear "racist" could be becoming just a trite tag that gets trotted out  and is starting to gloss over the real motivations that drive it?