It all comes to the basic question:
What comes first, the hen or the egg?
What comes first, the concept or the pointer (the label)?
I am no psychologist, thank God, but maybe there are inborn prejudices which build our conceptual elements giving them a likely substance. In my frame, where LANGUAGE 1 is the tool by which we organize the world according to our human inheritance and our place in society, abstracting away reality into general mental elements, the intuition is that these trends came first, we then pointed to them, and finally we learned to make them explicit in our acts of communication using a linguistic material (i.e., LANGUAGE 3) which helps us in so doing.
But you are right altogether: we, then, use those concepts as realities and live with them, whether we are aware or not. There's no escaping. That's what depresses me sometimes, as in this nationality conundrum, and, as you may remember, in our sexist approach to other human beings.
As we say in Spanish: Sólo me queda derecho al pataleo (Roughly: The possibility to complain is my only escape left)