I think you're right...we can say it, but I don't think we can prove it or demonstrate it! Maybe it would be good if we could show that we were a tolerant, and positive society. Part of being a Christian country in the past is that we persecuted the Jews, the protestants, the catholics, the anabaptists etc, all in the name of faith, and I'm sure we could say that that's not really what christianity should be about...but it's part of the legacy, and perhaps its the reason people don't want it.