Inside the art museum Kunsthaus Zurich. Photo: Wikimedia Commons. A Jewish artist wrote in an open letter on Wednesday that she wants her works taken down from display at an art museum in Switzerland over its decision to permanently house a Nazi arms dealer’s personal collection. Swiss painter, sculptor and author Miriam Cahn also said she wants to buy her art back from the museum Kunsthaus Zurich, where her work has been on display since the 1980s. “I no longer want to be represented in this Zurich Kunsthaus and would like to withdraw all of my work. … I will...