The Cuban working class does not self-administer the economy. Although Cuba is as close so a success as Marxism can get, Fidel's policies of homophobic persecution - regardless of the fact that he regretted them - is proof positive of why authoritarian policies go wrong. Why no single person should have that level of power.

Because in spite of Castro's evident good intentions, and the otherwise high level of success that Cuba has achieved, those atrocities still happened. And because of Authoritarian policies, no-one within Cuba could opposite it while it went on without facing persecution.