Black X Mass has been a San Francisco tradition since 1997. Over the years the audience has ranged from people who don't celebrate Christmas, to those who want to detox from a day of heavy dysfunction with their celebrating relatives and contemplate the possibility that they were adopted, to people who have recently moved to San Francisco and have no local family with whom to celebrate. Black X Mass is presented by the First Satanic Church and its founder and high priestess, Karla LaVey. "It's basically a variety show. There are outlandish acts that are really good musically. There's a...