The question is, in the light of that, why on earth would you have a problem with marriage between the races?
Colossians 3:10-11 has a similar point.
If all men are equal, it makes absolutely no sense to restrict who can marry whom based on the color of their skin.
Now, religion I agree with you a bit more on. We are actually commanded not to be equally yoked. And in the Old Testament, when Jews were forbidden to intermarry with certain groups, it was because of their religious differences. Recall that Ruth, a Moabite, married Boaz, an Israelite, and God was OK with this, because both worshipped the true God.
Unless you have some sort of Biblical basis for racial segregation, I'd recommend you'd let it go. It will strengthen your own faith to not have to judge others for unbiblical reasons.