In 1966, LIFE magazine published, “The Crime of Being Married.” The article told the story of Richard and Mildred Loving, a married interracial couple battling Virginia’s anti-miscegenation laws. The warm, intimate pictures revealed a close-knit family, including children and grandparents, living their lives in opposition to a patently unjust law — but also captured eloquent moments, gestures and expressions that affirmed just how heavily their defiance weighed on the very private couple.