The author presents the case of expressiveness and identity in the language of the Internet users discussing about the politics. The analysis is based on the corpus of French, Italian and Polish anti slogans and anti posters and it refers to the verbal instruments used by the authors of anti electoral advertising. The objective of the paper is to describe the aesthetic processes which make this kind of language expressive as well as to show how the identity of the anti electoral publicity authors is created.L’article a pour objectif d’aborder le problème de l’expressivité et de l’identité dans le langage des internautes traitant le sujet de la politique. En nous basant sur un corpus d’anti-slogans et d’anti-affiches politiques relevés...