Interesting story and archaic how people mistreat people. I am old enough to remember when mixed race couples could not marry. During the 1950's it was illegal for mixed race couples to marry in half of the states. Most couples ignored the law and got married anyway.
That all changed In the aptly named Supreme Court case Loving V. Virginia. Richard Loving and Mildred Jeter, a mixed race couple got married in 1958. A short time later they were rousted out of bed and arrested by the sheriff for the crime of miscegenation, a felony in Virginia. A Virginia court found them guilty. They choose to live in the District of Columbia to avoid jail time.
They married in 1958 and fought their case up until 1967 when the Supreme Court Court found invalid all state miscegenation laws.
Justice Anthony Kennedy cited the Loving case in his opinion on the Supreme Court case Obergefell v. Hodges, which legalized gay marriage across the United States in 2015