Infiltration by police is a matter of public record: “A police officer who for 7 years lived deep undercover at the heart of the environmental protest movement … playing a frontline role in some of the most high-profile confrontations, has quit the Met..”
https://www.theguardian.com/uk/2011/jan/09/undercover-office-green-activists?CMP=Share_iOSApp_Other
In the 1990s, the police infiltrated left wing and new age protest groups, encouraging them to commit ever more extreme acts to discredit them in the eyes of the public and entrap them to arrest.
In other news, anti-vax protesters are committing ever more extreme protests.
The Shadows 