Pew Research has an interesting report on the issue of interracial relationships and what your kids think about them. Times and attitudes have changed. Compared to you and your parents your kids have a greater understanding and acceptance of relationships between races. Not only that but they are more likely to have friendships with people who cut across racial lines. As a parent you need to embrace this reality. Here is a place for you to learn from your children and see how it is that they can embrace relationships across the barriers that you and your parents struggled with.
Check out the video below and begin around 3:31 and remind yourself what the attitudes were like about 30 years ago.