No backinfo on this one, but the language sounds more Spanish than Portuguese to me, so it’s probably not Brazil, but another South or Central American country.
The video shows an execution of a young man in the woods. He is shown kneeling as the executioner discharges several rounds in him, mostly in the back. The chap then falls into a grave, which he may have dug himself.
Props to Best Gore member @natural-selection-2 for the video: