The documentary is limited to exposing the reality of a Brazil that was finding its prominent role in world chess. Even today, Brazil is influenced by external factors, not least because today the world is much more globalized.
The rulers of that time were not patriots, they had interests of their own. Fidel Castro and Che Guevara had just conquered the island of Cuba. Revolutionary ideas seemed beautiful, and promised hope to the most suffering people.
However, the Brazilian people realized that the interests of the leftist rulers did not have national, but international consistency, mainly interests aligned with the Soviet Union.
Perhaps the most notorious fact is the number of Czechoslovakian spies who settled in Brazil at that time, a documented and unchallenged fact.
The other side of the story is told, and it is far from being an apology for totalitarianism. Worth seeing.