I became a supporter of this movement in the mid-1990s at a time when the odds of success were roughly zero to none. It was personal for me and mine, of course, but there was a larger purpose too. This is our legacy — our generation’s — a hard-won gift to future generations of young people that will enable them to grow up without stigma and go on to lead full and productive lives. Sometimes justice prevails. This is one of those times.
Andrew Sullivan, then affiliated with the GOP, was one of the first advocates of gay marriage. I saw him speak on the topic at an event in West Hollywood in 1996 or so. He’s posted a brief history of those early days here.