Kinder der Straße
Violent Playground (original)
Starring Stanley Baker, Anne Heywood, David McCallum, Peter Cushing, John Slater, Clifford Evans, Moultrie Kelsall, George A. Cooper, Michael Chow, Tsai Chin
It's a crime and drama movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Belgium.