Tom Nelson and Linda Karle-Nelson, lifelong Catholics, are the parents of gay adult children who are in committed relationships. At mass Sunday, Nelson and Karle-Nelson received communion. And they intend to do so again this weekend, even after Detroit Archbishop Allen Vigneron's statements in April that Catholics who support gay unions or marriage should abstain from receiving communion. "He's not going to keep me from the Eucharist," said Nelson, 83, a retired engineer from Farmington Hills, Mich. "Somebody's got to stand up and say, 'Enough.' "