My country has rockets where the robin sings

Brazil Year 2000 (1969)

Directed by Walter Lima Jr.

Year 2000. Brazil was partially devastated by the Third World War. An immigrant family arrives in a small town, which they call "I Forgot." The trio is recruited by an indigenist to pretend to be indigenous during the visit of a general. In the dilemma of integrating into the system or preserving individual freedom, the family moves toward disintegration as the city prepares to launch a space rocket.