In his 1835 book Democracy in America, Alexis de Tocqueville noted that for Americans, "equality is their idol." Among such a democratic people, he reports, "there are certain epochs at which the passion they entertain for it swells to the height of fury." They prefer equality in freedom, he noted, but if "they cannot obtain that, they still call for equality in slavery." Even barbarism, servitude, and poverty are acceptable offerings to "this irresistible passion." The same-sex marriage debate might have focused on the purpose of sexuality, or the nature of homosexuality, or the etiology of marriage. Instead, the dominant...