Yup, mixed marriages are a great case study in this and I've seen there it myself. I've seen racism in 4 continents and can confirm it isn't just localized to a western black/white paridigm. I do think it is more common among Christians than Muslims, but Muslims trying to modernize/westernize might be increasing things among Arab/Desi communities.

The political discussion of this is amost entirely localized to the American context so the topic has been largely externalized. I think it is at the root of a lot of other issues though.