Nicaragua is in Central America, not South America.
Pinochet gave Chile(which is in S. America) back, in a peaceful and orderly transfer of power, to democratic rule in much better hsape than in which he took power.
El Salvador's(Slavador is in Central America too, btw) junta was very left wing, but not left wing enough for the Cuban backed FMLN.
All the countries you have mentioned are now democratically ruled.
The only country in the region you seem to have avoided is
Cuba ( a Latin maerican country on the island of Cuba in the Carribean), is a vicious dictatorship which, when Castro's tyranny is finally ended, will be in much much worse shape than it was when he took power, and will most certainly not have the tyranny ended by an orderly transition to democracy.
Misrepresenting Ayn Rand, who escaped the USSR tyranny at ehr earliest opportunity, was most assuredly not a supporter of dictatorships. To try to characterize her as such only demonstrates ignorance of her more profound than that demonstrated in your geographical tour de force.
Ed