Tulsa, Okla., 1921. John and Loula Williams are proud business owners in the bustling Greenwood district. By day they operate a popular confectionery, and at night they run the Williams Dreamland Theater, showing the latest moving pictures to the many residents of the area. But one day, an all-too-familiar scene plays out: A white woman screams. A Black man runs away in fear. Presented by nimbus theatre. Tickets $5-$50, sliding scale. Performances at the Crane Theater, 2303 Kennedy St. NE,…