Resumen En este articulo se presenta un analisis critico de la columna Metrallo, de Alfredo Molano, sobre Medellin. Para realizarlo, se aplican 14 de las 22 tecnicas propuestas por Daniel Cassany (2006) para realizar una lectura critica. Ademas, se retoman ideas de Ernesto Garcia Alzola, Jean Remkema, Teun Van Dijk y Van Eemeren, especialistas en analisis del discurso. Palabras clave Argumentacion, Columnistas, Discurso, Lectura critica, Texto politico, Medellin. Abstract A critical analysis of Alfredo Molano’s opinion article about Medellin was made in this work. In order to do this, 22 critical reading techniques proposed by Daniel Cassany (2006) were applied to such article. The 22 techniques are explained in detail but only some of them are used in the analysis and the others are supposed to be applied by the reader. Besides the ideas of Ernesto Garcia Alzola, Jan Remkema, Teun Van Dijk and Van EEmeren, speech analysis specialist, are also considered. Keywords Argumentation, Columnist, Critical reading, Discourse, Medellin, Political text. Resume Cet article present une analyse critique d’une rubrique au sujet de la ville de Medellin par Alfredo Molano. Pour realiser cet exercice on a applique 14 des 22 techniques proposes par Daniel Cassany (2006) par rapport a la lecture critique. On a repris des idees des specialistes du discours : Ernesto Garcia Alzola, Jan Remkema, Teun Van Dijk et Van Eemeren. Mots-cles Argumentation, Chroniqueurs, Discours, Lecture critique, Texte politique, Medellin