Discussed yesterday:

Police officer plays Taylor Swift song to keep a video off YouTube - https://news.ycombinator.com/item?id=27702325 - July 2021 (304 comments)

Also related (thanks thamer):

Multiple Beverly Hills PD officers now weaponizing copyright against streaming - https://news.ycombinator.com/item?id=26114959 - Feb 2021 (244 comments)

Police playing music while being filmed, seemingly to trigger copyright filters - https://news.ycombinator.com/item?id=26082303 - Feb 2021 (487 comments)