Critical Discourse Analysis (or Critical Discourse Studies – CDA/CDS) examines the relationship between texts, discourses and power, dominance, power abuses and social inequalities. Critical discourse analysis is a multidisciplinary research perspective, which not only examines the interactions between the text, the micro level and its surroundings, the macro level, but its main goal is to uncover social inequalities, expose the forms and modalities of abuse of power. The representatives of CDA are committed to social equality and justice. Present paper presents the work of one of the outstanding representatives of Critical Discourse Analysis, Teun A. Van Dijk, by presenting the history and possibilities of CDA, and also the key elements of Van Dijk’s approach. This study aims to show how knowledge, power and discourse are connected in Van Dijk’s Critical Discourse Analysis.