On Thursday, June 6, at 7 pm, at the Espai Vilaweb, c / Ferlandina 43, will be presented the book by Xavier Diez, GRENPoC researcher, A Critical History of the Lefts, with Professor Agustí Colomines, director of our Chair. This book begins with a documented review of the historical making of the left movement and finish with a reflection on the reasons for the left crisis around the world. In the last part of his work, Diez, historian and trade unionist, makes some proposals to invite the current social and political agents to recover the initiative.