The Guyanese-British artist investigates echoes of empire in the British Museum’s collections. • British Museum, London, 17 October to 9 FebruaryAlso showingRirkrit Tiravanija: A Million Rabbit HolesThis renowned interactive artist turns an eye on the tense US presidential election. • British Library, London, until 23 FebruaryLauren Halsey: EmajendatSculptures that emerge from the artist’s life and activism in south central Los Angeles. • Kendall Koppe, Glasgow, until 16 NovemberImage of the weekThe annual Frieze art fair in London has had a redesign. It’s the kind of daring, obviously anti-realist colour game we might associate with modern art – but Rosso Fiorentino lived long before Matisse.