Members of the book group, sporting matching gray T-shirts and broad grins, boarded the Napa Valley Wine Train in high spirits Saturday. “The train is leaving the station! Choo choo!” member Lisa Johnson posted on her Facebook page, captioning a picture of five glasses of burgundy liquid clinking together. But not long into the trip train staff began asking them to quiet down. Before the journey was half over, they were escorted off the train, where police officers were waiting for them, according to the Associated Press. “We didn’t do anything wrong and we still feel this is about race....