Take a world that we are all clones of our self's, we all were raised with the same education, which results in the same belief system. There's no religious war because everyone believes in the same thing. Because everyone is the same, there is no distinction or variation and no reason to discriminate. There is no economic war, because everyone does the same job and makes the same about of money. We are all happy when our daughter brings home the next door neighbor's son, because he looks just like you, believes like you and works like you.
Race is the most generalized classification of distinguishing a human being.
Because every action has a reaction, you might be trying to end what you truly what to save.