I was thinking about the arguments before the Supreme Court right now as they decide about 2 same-sex marriage cases. It seems to me that both laws are wrong in that they denying civil rights to a certain class of individuals.
I was thinking of a documentary I saw a while back. I looked it up and it seems to be The Loving Story on HBO. The klink may be a bit slow to load but it is a good summary of the story and has links to more about the documentary.
In that case there was a law against interracial marriage which forced this couple from their home. The law was eventually found unconstitutional but it seems to me a good bit of harm was done to this and probably other families by then.
I was thinking that this is kind of the same issue or at least very similar so I googled what I remembered from “The Loving Story” and found a good blog entry did a very good job in discussing this.
So read The Supreme Court Ended Mixed-Race Marriage Bans Less than 50 Years Ago.