Gypsies. No surprise there.
We too had a case here recently.
In the Gypsy village of Berevoiesti.
70 slaves freed.
This is the story of two Romanian brothers who were held captive there (one of them developed mental problem due to severe abuse):
No subtitles unfortunately. But in the first minutes a psychologists asks them whether their abusers ever showed mercy. The brother who is now mentally disabled says no. He was severely beaten after he tried to escape.