See: Greenpeace included with neo-Nazis on UK counter-terror list (The Guardian, link):
“The guide, produced by Counter Terrorism Policing, is used across England as part of training for Prevent, the anti-radicalisation scheme designed to catch those at risk of committing terrorist violence.
…the list of groups viewed as a potential concern contained in the new 24-page document includes Extinction Rebellion. It also includes Greenpeace – among whose supporters are Dame Judi Dench, Stephen Fry, Gillian Anderson and Joanna Lumley – and the ocean pollution campaigners Sea Shepherd, whose supporters include Sean Connery and Pierce Brosnan. Also included is Stop the Badger Cull, which is backed by Sir Brian May, the Queen guitarist.”
See: The document produced by Counter Terrorism Policing (pdf)
And: Non-violent protesters are not terrorists and it’s time the police accepted that (The Guardian, link) by Kevin Blowe