Opponents of same-sex marriage didn't have to look far to find footage of a boisterous San Francisco Mayor Gavin Newsom declaring - in his best Howard Dean voice - that gay marriage is here to stay, "like it or not." They took it right off the city's official Web site. "It stood out like a diamond on a donkey's behind," said Frank Schubert, co-chairman of the campaign to pass Proposition 8, the constitutional amendment on the Nov. 4 ballot to ban same-sex marriages. The Newsom moment was like a gift from fundamentalist heaven."He just looked so smug and cocky," Schubert...