In modern society, consumers of public discourse have played increasingly active roles in shaping the debate of social issues as "prosumers", who assume dual roles of producers and consumers, through writing letters to the editor and making online comments. The course introduces students to a set of theoretical approaches and concepts in critical discourse analysis (CDA) useful for analysing and participating in the discourses on social issues and public policies. Students will review how CDA researchers analyse the media discourse on current events and social issues such as public health and marketization of higher education using theories and concepts in CDA. They will learn to collect information from the Hong Kong government regarding various public policies under the Code on Access to Information to better understand the social issues and comment on the relevant public policies and government programmes through writing letters to the editor, a resistant genre for citizens to voice their opinions. Applying CDA concepts and techniques to the analyses of current events, students will write analytical essays on CDA research literature and opinion pieces that may be submitted to local newspapers for publication. Offering extensive opportunities for writing practices, this course provides training for students to become competent and effective members of the discourse communities on both research issues and public policies.