From San Francisco Archbishop Salvatore J. Cordileone's address at the March for Marriage, Washington, DC, June 19, 2014 (all emphases mine):
Let us, then, take our cue from the best our predecessors in faith have inspired, and not humanity’s frequent failings and sins. Like them, we now in our own time need to proclaim and live the truth with charity and compassion as it applies to us today: the truth of a united family based on the union of the children’s father and mother in marriage as the foundational good of society. Every child comes from a man and a woman, and has a right, a natural human right, to know and be known by, to love and be loved by, their own mother and father. This is the great public good that marriage is oriented towards and protects. The question is then: does society need an institution that unites children to the mothers and fathers who bring them into the world, or doesn’t it? If it does, that institution is marriage – nothing else provides this basic good to children.Yes, this is a foundational truth, and one to which we must witness by lives lived in conformity to it, and which we must proclaim with love. Love for those millions of loving single mothers and fathers who struggle to pick up the pieces of their lives and succeed in creating loving homes for their children – they need and deserve our love, affirmation and support. Love for the husband struggling with fidelity, for the woman who feels abandoned and pressured into abortion, for the teenager struggling to believe in the heroic vision of love that makes sense of chastity, for the single person who cannot find a mate, for the childless couple trying to cope with infertility, for the wife who finds herself nursing a sick husband in her marriage bed, for the young person trying to navigate through sexual identity issues and may feel alienated from the Church because of it, maybe even because of the sort of treatment received from those who profess to be believers. To all of you, I say: know that you are a child of God, that you are called to heroic love and that with God’s help you can do it, that we love you and want to support you in living your God-given call.
And let us not forget: we must also proclaim this truth especially with love for those who disagree with us on this issue, and most of all, for those who are hostile toward us. We must be careful, though, not to paint our opponents on this issue with broad strokes. There is a tendency in our culture to do this to groups of people the powerful don’t know and think they don’t like. We must not do that. We must recognize that there are people on the other side of this debate who are of good will and are sincerely trying to promote what they think is right and fair. It is misdirected good will. But even those from whom we suffer retribution – and I know some of you have suffered in very serious ways because of your stand for marriage – still, we must love them. That is what our ancestors in faith did, and we must, too. Yes, it is easy to become resentful when you are relentlessly and unfairly painted as a bigot and are punished for publicly standing by the basic truth of marriage as a foundational societal good; it is tempting to respond in kind. Don’t. For those of us who are Catholic, we just heard our Master command us in the gospel proclaimed at Mass the day before yesterday: “love your enemies and pray for those who persecute you” (Mt 5:44). We must not allow the angry rhetoric to co-opt us into a culture of hate.Yes, we must show love toward all of these and more. Love is the answer. But love in the truth. The truth is that every child comes from a mother and a father, and to deliberately deprive a child of knowing and being loved by his or her mother and father is an outright injustice. That is our very nature, and no law can change it. Those with temporal power over us might choose to change the definition of marriage in the law even against all that we have accomplished through very generous participation in the democratic process, but our nature does not change. If the law does not correspond to our nature, such that there is a conflict between the law and nature, guess which will prevail? And people will figure it out.