Find this! Stuart Hall on Ethnicity and the Discursive Turn.
Here's another one: Taking the discursive turn: Critical studies in language, discrimination and schooling.
This social movement study,
COLLECTIVE IDENTITY CONSTRUCTION IN BLACK ABOLITIONIST DISCOURSE, adopts an approach in which movement discourse is viewed as a networked field of concepts from which arguments are fashioned. This approach requires an examination of the socio-cognitive structure of a discourse, an analysis of its rhetoric, as well as its ideological foundations."

