"the point at which Britons gave up their indifference to the slave trade."
The Turner Prize, named after J.M.W. Turner,
is an annual prize presented to a British visual artist under 50. It is organized by the Tate gallery and staged at Tate Britain. Since its beginnings in 1984 it has become the United Kingdom's most publicised art award. It has become associated with conceptual art, although it represents all media and painters have also won the prize. [source: wiki]