A trivial counter example -- if you causally dismissed your government as a Cuban in Cuba online, what happens?
(Since Cuba has a really, really strict control of the Internet last I looked, it is of course a bit of an academic question...)
Edit: This comment is really jumping up and down in votes... :-)
If anything, the history of Cuba's attempted overruns by the US only serve to justify the regime's paranoia.
So, why didn't you compare with working democracies there.. instead of with cleptocracies that had coups and civil wars?
What is the real problem with doing as normal people and condemn all dictators?
Castro had options, he could have gone to Western Europe and asked for help in e.g. the 70s, as part of a democratization program.
(And when Cuba didn't have free money by being a client state, they even had problems feeding the population.)