“[T]here is no legitimate state policy underlying Proposition 8. The occasional suggestion that marriages between people of different sexes may somehow be threatened by marriages of people of the same sex does not withstand discussion. It is difficult to the point of impossibility to envision two love-struck heterosexuals contemplating marriage to decide against it because gays and lesbians also have the right to marry; it is equally hard to envision a couple whose marriage is troubled basing the decision of whether to divorce on whether their gay neighbors are married or living in a domestic partnership. And even if depriving lesbians of the right to marry each other could force them into marrying someone they do not love but who happens to be of the opposite sex, it is impossible to see how that could be thought to be as likely to lead to a stable, loving relationship as a marriage to the person they do love.

Moreover, there is no longer any credible contention that depriving gays and lesbians of basic rights will cause them to change their sexual orientation. Even if there was, the attempt would be constitutionally defective. But, in fact, the sexual orientation of gays and lesbians is as much a God-given characteristic as the color of their skin or the sexual orientation of their straight brothers and sisters. It is also a condition that, like race, has historically been subject to abusive and often violent discrimination. It is precisely where a minority’s basic human rights are abridged that our Constitution’s promise of due process and equal protection is most vital.”