Elitism and Racism

My friends are mostly of some Mexican decent.
I am Mexican.
Is this racism?
Actually this is probably a result of the fact that the majority of people where I live ARE Mexican.

However, I was just thinking about how a Caucasian friend of mine says she feels uncomfortable hanging with my group of friends and blames it on her lack of social skills, which seems entirely plausible (no offense =3). But I wonder is race somehow involved on some deep hidden subconscious level?

I know for a fact people are more inclined to form circles of friendship with people of similar cultural background. I don't think that this fact devalues anything any group has to contribute to society.

But looking at this I can't help but wonder just how deep our racial-biases run. Is it merely because people have common interests and experiences being of the same culture that they tend to 'flock together'? I wonder to myself if this subconscious and almost natural phenomenon would constitute as 'racist'.

I recently read something Morgan Freeman said in an interview. To paraphrase: Why have a black history month? Is there a white history month? Black history is American history. The best way to stop racism is to stop talking about it. I'm not a black man, I'm just human.

But I can't think of any social issue that was handled by "not talking about it."
Maybe it's meant to be more of a mindset.
Racism cannot be conquered consciously until it is conquered unconsciously.

We've got a lot of work to do when it comes to raising our kids...