While it's good to honor our Judeo-Christian heritage, having a symbol tied to one religion doesn't feel very inclusive. I experienced this at two UU churches, and the justifications have been "Well, someone prominent gifted this to us some time ago," or "a Buddhist suggested that we needed a central meditative symbol." I have no problem with a Sermon that refers to the teaching of Christ, but a fixed Christian symbol being the first thing you see when you sit down at this particular Church feels short-sighted.