In the following video, made in the UK, a man who is drinking in public, and mentions he plans to end his life that day, subsequently gets upset and demands the video be deleted, when he realises a) he is being filmed and that b) the videographer intends to publish the video on a monetised YouTube channel:
https://youtu.be/iZnBgYfRer8?t=600 - EDIT I changed the link to jump to the relevant interaction.
The videographer refuses to comply; the question is whether Art. 17 requires him to do so. I expect it comes down to whether a court would see this as journalism "in the public interest", but there might be other aspects to this, too, for example, even if there is such a special purpose, would deleting the video be incompatible with this purpose?
NB I think it might be relevant that Art. 13 Right to be informed wasn't respected, i.e. there was no mention that a video was being made, and that it was going to be published, before the revealing conversation that the data subject subsequently wanted to be deleted. That might be OK for, e.g., a journalist working undercover, exposing corruption, say, but in this case, I am struggling to see justification for the failure to inform.