IIRC (and I cannot quote chapter and verse) "general" crowd shots are fine, but you start treading on thin ice when individuals can be identified. A video such as this will fall into a grey area, because, though the individuals have not been identified, it is still a film about three individuals rather than a general shot, and it has proved easy enough to identify the individuals. Again IIRC there are exemptions covering activities such as journalism, but this film is not that. I also suspect the area is civil, so any action would have to be initiated by one of the parties.