"'Untitled' (Portrait of Ross in L.A.)" is a 1991 conceptual work by the late Cuban American artist Felix Gonzalez-Torres displayed in the Art Institute’s Modern Wing on Oct. 3, 2022. (Hannah Edgar photo / Chicago Tribune) Following social media outcry, the Art Institute of Chicago amended the descriptive label to one of the most eye-catching works in its modern and contemporary collection last week. How that contentious label text and its replacement came to be, however, is a case study in the behind-the-scenes considerations and pressure points in art curation. Advertisement “‘Untitled’ (Portrait of Ross in L.A.),” a 1991 conceptual...