It's an late 70s or early 80s exploitation movie. The only thing I have is the Belgian theatrical poster containing translated titles in Dutch and French



I've checked Antonio Sabato's filmography over at IMDB, but I haven't been able to identify this movie.

Thanks in advance

I think it must be:

I violenti di Roma bene (1975) .... Inspector De Gregori
... aka Terror in Rome (USA: bootleg title)
... aka Violence for Kicks

poster