It's odd really. My experience with the matter is that a person's bringing up is almost the sole decider on opinion when it comes to this (and most any really) subject. I live in central Alabama (for those of you outside the country, we didn't invent racism, but we danged near perfected it) and the population is roughly: 50% White, 30% Black (Or whatever your preferred term is), 18% Hispanic, and the remainder being made up of persons of mixed heratige and a handful of Asians.
Now my father is of the old school. From what I've heard about my Grandfather, I wouldn't be surprised if he was involved with a certain sheet wearing group that will go unnamed here. Being raised in that sort of environment, he is staunchly against interracial dating/marriage/ect. Yet, strangely enough, some of his good friends are of other races than himself. Go figure.
Now I on the other hand was raised in a more Urban and Liberal area than Hillbilly Hell, AL. I was taught throughout my bringing up that all people were equal, and being of the more sensible scientific type, I never saw any reason for this to be otherwise. I've never participated in an interracial relationship, but this is largely due to my not really having any attraction to most members of other races. Nothing wrong with them, just not my thing.
Now back to my father. Over the break I mentioned my musing over possibly starting a relationship with a Japanese girl that attends the same University as me when she gets back in the country. My father was perfectly fine with this. My theory on this is that since there were very few (read: none) Asians in 1960s Alabama, my Dad's bringing up and taught prejudices did not include this group.
I have seen similar instances with some of the Turkish and Columbian students and races in their homelands, versus the ones they interact with while in the states. It makes for an interesting subject,I'm going to have to look into taking some classes in this next semester.