Portuguese dubbed trailer (not sure if it's a Portuguese or Brazilian trailer)
EDIT: it's from Brazil.
Original title: Razza Violenta
Directed by Fernando Di Leo (Italy, 1982)
Thanks for the heads-up on the trailer to Vittorio Marcelli.
UPDATE: the mighty powers at YouTube deleted the video at their site because of "third-party notifications of copyright infringement". It's bollocks!! Whoever notified YT most likely DOESN'T have the copyrights to this OLD Portuguese dubbed trailer. Besides, a trailer is an advert for a film, why the fuck do they even spend so much time on having trailers deleted. Full films I can understand but deleting trailers is just plain daft. Anyhoo, here it is again, uploaded via Blogger (which, ironically enough, is also now YouTube, haha).