“Millions of us are very unhappy about many things here”, says Hannah, a medical student [in Cuba]. “But we are not dissidents.”

The Economist

dissident

adj. Disagreeing or differing (in opinion, character, etc.); at variance, different. Const. from.

Disagreeing in political matters; voicing political dissent, usu. in a totalitarian state.

One who dissents from the established or dominant form of religion; a dissenter.

(The Oxford English Dictionary. 2nd ed. 1989. OED Online. Oxford University Press.)

Once Catholics couldn’t speak their name: now anyone with an opinion that goes beyond the ‘very unhappy’.