What is the theme in The Sleep of Reason by Antonio Buero Vallejo?

The characters of The Sleep of Reason can be divided into two categories: repressors and the repressed. The repressors are both real and unreal. The real repressors are King Ferdinand VII, Calomarde, and the soldiers of the Royal Volunteers. They are engaged in the same project: intimidation of the Spanish populace to force political compliance. Methods of intimidation include banishments, beatings, and executions. While Calomarde is clearly evil in machination, the soldiers are evil in practice. Calomarde wants Goya hanged for insulting the king in a private letter to a friend and the soldiers break in and loot Goya's home, beat and humiliate him, and rape Goya's mistress.