ABSTRACT
Spain has been one of the European democracies most affected by terrorism throughout the twentieth and twenty-first centuries. Terrorism perpetrated by ETA (Euskadi ta Askatasuna) has been the most intense one, but other groups have also perpetrated terrorist acts and even protracted terrorist campaigns. Rapoport’s (2004) waves of modern terrorism provide the right historical framework for the main expressions of political violence in Spain to be placed in.
