Class struggle can continue invisibly beneath a regime’s surface stability.

Evidence

Gramsci does not offer clear answers to all these questions. The sense of the analogy he draws between the post-1815 period in Europe and the period in which he is writing (see final sentences of this section) is simply to reaffirm that even when frontal attack may be impossible, a passive revolution may nonetheless be taking place; that the class struggle continues despite the surface stability of the fascist regime. — Antonio Gramsci, Selections from the Prison Notebooks, 382