4/9. Many of our museums are stocked with the spoils of British imperialism. But, from the Elgin Marbles to aboriginal skulls, there are now growing demands for the repatriation of such artefacts. Kenan Malik asks whether the clash between cultural identity and scientific rationality could spell the end for our museums and their role as custodians of the common inheritance of humanity.
(Repeated on Sunday at 9.30pm)