[R]epresentation furnishes the stage on
which struggles over distribution and recognition
are played out. Establishing criteria
of political membership, it tells us who is
included, and who excluded, from the circle
of those entitled to a just distribution
and reciprocal recognition. . . . Representation,
accordingly, constitutes a third, political
dimension of justice, alongside the (economic)
dimension of redistribution and the
(cultural) dimension of recognition.