People protest outside the Saddleback Church in Lake Forest, Calif. (The Orange County Register)

LOS ANGELES — On the first Sunday after a gay marriage ban passed in California, activists rallied in defiance, including hundreds of protesters outside an Orange County megachurch whose pastor brought Barack Obama and John McCain together last summer for a "faith forum."

About 300 gay-rights advocates fanned out along sidewalks leading to Saddleback Church in Lake Forest to voice their anger of the church's support of Proposition 8, a constitutional amendment approved by voters Tuesday that overturns a state Supreme Court decision in May legalizing same-sex unions.