Letter of support – stop the repression against university professors! This letter expresses our indignation over the decision by the Spanish judiciary to prosecute two political scientists and three jurists. The political scientists Jordi Matas (full professor, Universitat de Barcelona), Tània Verge (associate professor, Universitat Pompeu Fabra, Barcelona) and the jurists Marc Marsal (part-time lecturer, Universitat de Barcelona), Josep Pagès (part-time lecturer, Universitat Autònoma de Barcelona) and Marta Alsina (lawyer) were appointed members of the Electoral Commission in September 2017 by the Parliament of Catalonia to monitor the self-determination referendum to be held on October 1, 2017. The Spanish government challenged the legality of this referendum and about ten days before it took place, the Spanish Constitutional Court forced all the electoral commissioners to resign by imposing a fine of 12.000 Euros per person for each day that they remained in their position. Even