(English): The aim of the thesis is to analyse the discourse of exclusion of the Czech communism and the discoursive attempts to ban the communist party. It shall shed more light on its sources of thought as found in the Czech dissident movement, as well as on the conditions it has risen from after the Velvet revolution. We intend to point out that the two main concepts of the dissident thought are essential for the birth of the discourse - one is shaping it, while the other opposes. The influence of non-political discourses - such as legal or political discourse on the subject - are also given serious attention. Using the Critical Discourse Analysis toolbox of methods, we hope to enhance our knowledge about contradictory images of the Czech past that shape contradictory images of the communism as well.