On today's Your Call, we’ll talk about the power of images to incite social change. An exhibit at the Oakland Museum of California “All of Us or None” explores the history of social justice posters in the Bay Area. From Shepherd Fairey’s Obama poster to the Occupy movement’s Guy Fawkes mask--how can a popular image become a rallying symbol? Join us at 10 or email email@example.com. What art has motivated you to become active? It’s Your Call with Holly Kernan, and you.