Mood: The mood of this video appears to be intense and dramatic, with a sense of chaos and turmoil. The man's facial expression and the tagline 'MISTRUST MAKES A SNAKE BITE ITS OWN TAIL' suggest a theme of mistrust, betrayal, and possibly revenge. The overall emotion seems to be one of anger and desperation.

Environment: The setting of the video seems to be a dark and gritty urban or possibly crime-ridden environment, given the presence of a gun and the overall aesthetic. The background resembles a wooden wall or a burnt orange-colored surface with a textured, almost wooden appearance, adding to the gritty atmosphere.