The British spy police infiltrated groups advocating against racism. Peaceful groups that were not even suspected of breaking any laws.
They stole the identities of dead children.
They got into long term relationships with women who they had children with. Until they faked their own deaths and vanished suddenly.
Their behaviour was absolutely shocking and was not lawful. The Tories responded by increasing the scope of how police are allowed to act.
Read more about them: https://www.theguardian.com/uk-news/series/spy-cops-scandal
Thats who raspberry pi, the beloved teaching platform, hired.