Interracial marriage is a subject that can be the source of heated debate. In fact, as a pastor, I was once asked my view on the subject while interviewing with a church. What's more amazing is the lack of racial diversity in the area in which I was interviewing. It was doubtful that situation was one to even be concerned with.
The folks at Desiring God have posted on the subject. It's as well said as anything I could say on the subject, so I figured I'd just refer you there.
I would comment that those who marry outside their own race truly put their money where their mouth is. It is easy to say how non-racially minded we are until our son or daughter puts us to the test.