How does postcolonial criticism uses poststructural theories to understand a text?

One significant way in which postcolonialism uses
poststructuralism in understanding texts is within the issue of race and racial
identity.  For the postcolonialist, the concept of "race" is beyond binary opposition. 
It goes beyond "white" and "other."  Poststructuralism is concerned with the exploration
of narrative beyond established contours, to explore the root of identity that might lie
past the artificially constructed realms of "cultural majority" and "other."  In this
light, postcolonialism owes a great deal to the notion of poststructuralist theories
that explore individual racial identity after colonization.  The postcolonial work sees
racial identity as a constructed as a product of colonial reality and indigenous
experience.  Racial identity is something that is complex enough to lie beyond the
reductive strategies of "either/ or."  At the same, postcolonialism is seeking to make
the point that these arbitrary distinctions helped to create the culture of repression
that caused it to exist in the first place.  It is the basic idea of "us" versus "them,"
"European/ White" versus "the other," that caused colonialism to take hold and create
centuries of repressed sadness.  Postcolonialism embraces poststructuralist realities to
explore nuances between such distinctions in the hopes that repression in accordance to
a simplistic norm is replaced by complex and nuanced dialogue that incorporates more
voices.