How do you feel American society views it today? Do you feel society today is less tolerant, more tolerant, or unchanged than in the past?
More tolerant, but still far from color blind.
How do you feel your parents and grandparents feel/felt?
Much less tolerant. I have a cousin in a mixed marriage, and my mother (his aunt) still makes remarks about it - not so much that it's a bad thing, but that it's unusual.
Are you comfortable in sharing your personal views on it?
I've got no problem with it, although complete honesty forces me to admit that I take notice when I see a mixed couple.