Margot Adler, a radio journalist and correspondent for National Public Radio and a Wiccan priestess, left, spoke about vampires as symbols during last Sunday’s service at Judson Memorial Church, on Washington Square South. Adler began by saying that previously she had never known much about vampires, but in the last five years, has read more than 200 novels about vampires, and also enjoys watching blood-sucking TV series. Taking a break from marionette activities in Washington Square Park, Doris Diether, the veteran Community Board 2 activist, right, fearlessly greeted her after the talk. “I’m not into vampires. I’m into ghosts,” Diether later told The Villager.