This is story of twins taking part on Spartakiada 1975 - magnificent mass gymnastic exhibition - continuation of the prewar meetings of the Czech SOKOL, but filled by the communistic spirit.
I had found and downloaded material a few days ago, but i can not remember its source. So I have generated the link, but I do not know, how long I will be able to hold data on the accessible media.
It was created in 1976, in the years of "normalisation" after soviet occupation. Film director had assigned task to create film promoting communist Spartakiáda. If he would reject, he would obtain no future tasks, may be, his old films would be prohibited. I think, that under those circumstances, he satisfied the task not relucting his self-esteem. Under those circumstances, he created relatively good image.