Look, I think I have a unique perspective on this because I am the child of a mixed marriage. Black mother, white father. I grew up being called ____________ (<-enter racial epithet of your choice there) on a daily basis and know, first hand, what it's like to be discriminated against because of your skin color and/or ethnic heritage.
Human beings are social animals that form and live in social groups. There are economic groups, religious groups, ethnic groups, age groups, etc....but it's human nature. I think it's admirable, Chino, that you would like to "just let it go" and all, but I also think it's a bit naive. I have the benefit of 48 years of experience living as a person who is not really white but not really black. I've seen racism from both sides. It's an ugly reality of human nature and I don't think anyone reading this right now is ever going to experience a 100% post racial world.
I'm not all doom and gloom though. I will say that over the years things have gotten to be better. We have made strides as a culture, but we're a long, long, long way from racism not being a fairly common problem in society.