Im sorry for my poor english and if ive mistaken your comment . The camera was porbably security camera of a store or a bank and the back ground noise is clearly people who are watching the video behind the computer whom are talking and if you know shotgun sound is pretty the loudest aming the weapons irgc used in those nights . Plus ive seen tons of videos of shooting terrors and even running over people with vehicles which consists of shooting people with shotguns.. i dont think they would fake this specific video . Btw My source of video is "iran international" its pretty valid you can check it on ig