HoreTore is right that homosexuals may try to change the religious establishments of which they are a part. Don is right that it is questionable whether they should do so in court, instead of through the religious channels. Shouldn't they respect the religious freedom of those establishments?

I haven't studied any of the cases. But if you look closely at some of the examples, they appear not to be clear cut and dried at all.

In the Massachusetss case for example, the Catholic Charities of Boston operate on a license granted by the State of Massachusetts on condition that they respect the law of the land with regard to adoption. If they break the law, out goes the license.

And it's not the Charities that protested either, just a couple of Bishops. In December of 2005 the 42-member board of the Catholic Charities of Boston, having heard the Bishops, voted unanimously in support of continuing to allow gay couples to adopt children. The Bishops lost their case in court, too.