This book investigates how linguistic diversity functions as a critical mediator of social justice within contemporary liberal democracies experiencing rapid demographic shifts. Ingrid Piller, a professor of applied linguistics, utilizes a sociolinguistic framework to argue that language is a primary site of economic inequality and political exclusion. By examining the intersection of multilingualism and institutional power, the text asserts that social justice agendas must explicitly incorporate linguistic equity to address systemic disparities.

Scholars and educators frequently cite this work as a foundational text for understanding the intersection of language policy and social equity. Readers often note the academic density of the prose, which is well-suited for graduate-level study in linguistics and sociology.