Christian rock is hot these days, with touring bands strumming for Jesus at sold-out arenas and stadiums across the US. But in San Francisco, the country’s fourth-largest city, the audience for Christian rock is so small that the tours don’t even bother to stop there. This is a city that is not used to being ignored by any slice of the American culture pie, even if the values of said slice seem a bit at odds with San Francisco’s classically leftist vibe. The irony is that the Bay Area actually helped jumpstart the Christian music revolution a couple of decades back.