Brendan Kavanagh, YouTuber pianist, was performing in a "public" place which appears to be a shopping mall in the U.K. and he was being filmed. A few people asked not to be filmed. (The conversation did not progress to the point of determining who preferred not to be filmed because it would be presuming too much. Helpfully, at least one of them was carrying a China flag but I can't presume that's conclusive.) If the people who asked not to be filmed were to take legal action, would there be consequences for the pianist and his camera man?

Video of an objection to being filmed in a public place in the U.K.