California ? 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.

Ed Todeschini, a Human Rights Campaign volunteer, accused Saddleback in particular of helping propagate what he called misinformation about the Supreme Court ruling, including that gay marriage would have to be taught to kindergartners.

A message seeking comment left at the church’s main office, which was closed Sunday, was not immediately returned.

The amendment was passed last week with 52 percent of the vote.