Something about Atlanteans being white (I don't recall this ever being a point of Graham, and I don't think Plato mentioned it either) and bringing civilization

Something about Atlanteans being white (I don't recall this ever being a point of Graham, and I don't think Plato mentioned it either) and bringing civilization to brown folk (who later brought it to white folk), implying that brown folk are lesser. Yeah, it's not their best work.