View image | gettyimages.com   FOR TWO DECADES, KARA WALKER HAS PURSUED a unique practice focused on exploring the history of race, gender, power and exploitation in the antebellum South through large-scale cut-paper silhouettes, drawings, watercolor and video animation. The artist’s primary subject parallels that of Toni Morrison’s Pulitzer Prize-winning novel “Beloved” (1987), as well...