This reminds us of the story of the USSR showing negative images of the US in Soviet theaters during the Cold War.
In 1968, the selected video clip was of the Chicago DNC Convention riots. Somebody was given a free ride to Siberia that day, as the message intended was not the message received.
The movie-goers, as they watched Chicago police beat a black rioter, were in awe. "Look at that negro's nice shoes!" they said as they pointed to the black man's shoes.
Lesson: be careful what you permit into your closed commie society. And, be careful what you release out. We watch the video above and see slaves.
Not true? Ok, let us interview one of those dancing masses.