When interracial couples won in court and could thus marry, there was nothing white couples, or for that matter black couples, were able to do that interracial couples could not do, and therefore equality was achieved without the need for any alterations on anyone’s part.
But now, with the granting of single sex marriage, we have a situation where real equality could only be achieved by having the heterosexual couples be forbidden from having their own children and from partaking of a form of sexual activity that the homosexual couples are unable to do, namely penis-in-vagina intercourse.
What’s worse, though, for those with a fixation on equality, is that a brother and a sister remain unable to get married. Surely two brothers or two sisters can now get married, since same sex marriage should not have the concern over the problem of incest. So in the name of equality, we have introduced a new form of inequality.
Are those who swiftly came to support the latest marriage innovation prepared to abandon the prohibitions on incestuous marriages in order to address this new inequality? Did no lawyer or Supreme Court justice even hint at this angle? If so, even the conservative press seems to have missed it.
The recognition of the right of interracial couples to marry never introduced a new inequality. That advantage is due to the fact that the definition of marriage underwent no substantial change.
Not true of single sex (read undiverse) marriage.
(And what of the seeming fixation on penis-in-vagina intercourse? Well, the popular misconception is that the Catholic Church puts a priority on reproduction and wants nothing but large families. The reality is that a marriage is not a marriage until it is consumated. Even if the groom (or bride) is known to be sterile, the Church has no problem with the validity of such a marriage. But if the groom were permanently impotent or otherwise was unable to have sexual intercourse, the Church would not view this as a valid and sacramental marriage. Therefore, the Church, in this way, places the priority on the unitive aspect over the procreative.)