This article critically examines the role of language as medium of instruction (MOI) in shaping students' self-perceptions, worldviews, and identities in a globalizing world. We draw on identity and social positioning theories and on Bourdieu's concepts of capital and symbolic struggle to frame our investigation. Using an analytical framework comprising critical discourse analysis and qualitative content analysis, we analyze letters written by Bangla- and English-medium writers to the editor of a Bangladeshi English newspaper to illustrate how discursive identity construction for "self" and "other" engaged the two groups in identity battles. We argue that (a) discursive identity politics may not be characterized in essentialist or nonessentialist terms exclusively but may actually draw on both depending on whether the representation is of self or other; and (b) although MOI is inextricably linked to social divides, the roots of the divides may lie in the social rather than in the discursive space.