I was reading the comments following an excellent post from Wil Wheaton (whose current and forthcoming books, Dancing Barefoot and Just A Geek, I must remember to buy) and saw the following recommendation from someone named Jim:
As an attorney, I would encourage everyone to read Loving v. Virginia, 1967 Supreme Court case. (Just Google it.) It is a short but enlightening read.
Jim’s right. It’s brief and highly worth reading. I even found the link for you.