According to
my article posted above the Cuban government propaganda does attempt to win the the support of its people. It is safe to say some of the Cubans buy into the propaganda.
The propaganda succeeds to some degree according to the article due to the following..
(1) The government has managed to stay in power because of its ability to make its presence felt on every street, and in every house.
(2) The government promotes itself as instruments for social (and ideally moral) betterment. In Havana the author came across signs encouraging alcoholics to get help at meetings. In one village he say a notice telling people to neuter their dogs. And then, there are the slogans - sayings from Castro and from Che Guevara printed on walls and placards across the country.
(3) The government cultivates a strong sense of national pride and is sustained by the view that its enemies are out to destroy it. In Cuba, the enemy is the United States.