Question: The case of Loving v. Virginia in 1967 was a landmark civil rights decision of the US Supreme Court which invalidated what prohibition that was historically taboo in the United States and outlawed in South Africa?
Sentence (from "Loving (2016 film)"): Loving is a 2016 British-American historical drama film which tells the story of Richard and Mildred Loving, the plaintiffs in the 1967 U.S. Supreme Court decision "Loving v. Virginia", which invalidated state laws prohibiting interracial marriage.
Relevant evidence: No