This is not only a great little movie, but also a great time-capsule of late-'60s Yugoslavia (a nation since destroyed by way of violent imperialist intervention).
A young Hungarian woman and an older, Serbian man enter into a relationship under the internationalist, multi-ethnic, mid-twentieth century culture of communist Yugoslavia. This work contains scenes of beautiful, deeply moving, intimacy and sexuality.
The contradictions of this culture are made plain within the movie by reference to scenes from a Russian revolutionary film by Dziga Vertoz: Committed communist masses dismantle an old Cathedral- their cause is clearly popular and democratic, yet it is intolerant of an institution that has itself embodied intolerance for millennia. "Revolutionary", "scientific" humanity remains constellated within a dialectic of resentment.
Ultimately, human frailty destroys both the Hungarian and the Serbian. Misunderstanding and jealousy cause the lovers to turn on, and destroy, each other within the the terms set forth by this "revolutionary" society. Progress creates the illusion of enlightenment. But ultimately it is human nature that decides our fate.
This outlook ultimately qualifies writer-director Dusan Makavejev as a philosophical reactionary, albeit an exceptionally creative one.