November 6, 2008 6:52 am Gay Marriage Supporters Defiant in Defeat A crowd of about 2,000 shut down San Francisco’s Polk Street as they protest and mourn the loss of same-sex marriage. US & World Videos 2:48 Forecast: Gradual warming trend 1:25 Bay Area high school seniors honored with Dave Goldberg Scholarship 1:10 Bay Area app monitors problems for people living with Parkinson's 0:26 Kaiser Permanente data breach may have affected millions 1:35 Kari's forecast: Gradual warming trend