Thoughtful, kind people genuinely disagree about same sex marriage. Some will never agree. Similarly thoughtful people tacitly tolerated slavery, anti-Semitism, sexism and other forms of prejudice when they knew it was wrong. The arc of history bends toward human justice and equality. For gay rights in America, the question is when?

The political courage to repeal the Defense of Marriage Act, Don’t Ask Don’t Tell and achieve full equality will come only when more non-gay citizens of both parties find the courage to “come out” of the closet of silence

More:
http://axisofreason.com/2009/06/29/heterosexual-closet-of-silence/