Nothing new in this story (see link below). They have always spied on and infiltrated the left. Many people will know of the murder of the teacher Blair Peach by a Special Patrol Group officer way back in 1979. I went to Blair Peach’s funeral together with a great crowd who marched to hear speeches and eulogies with the theme “Don’t mourn – mobilise”. (By the way, I thought we should do both.)
The police certainly mobilised. Two young men in front of me marched as mournfully as everybody else, with long hair and dressed in jeans and leather jackets. At a bend in the road, they suddenly slanted off to join their uniformed colleagues (slightly inept, this – blow your own cover, why don’t you?!). Nobody pointed and jeered, which we should have done. But we had a funeral to get on with, which we did.
We should, I suppose, be pleased that this time the police have been forced to pay compensation to the protesters they humiliated. But we should also understand that a Boris Johnson government would have none of that nonsense: there’d be free rein given to the successors of the SPG, the Territorial Support Group, to do as they see fit and the government would ensure that any judge assessing complaints was carefully picked. If you don’t think that could happen, let me point out that, even in the case of Blair Peach, the coroner (in the face of overwhelming evidence to the contrary) steered the jury to a verdict of death by misadventure. Carefully picked? You bet.

https://www.theguardian.com/uk-news/2019/jun/26/met-police-in-700k-payout-to-detained-anti-fascist-protesters?CMP=Share_iOSApp_Other&fbclid=IwAR04FkmmwyISUZWAia3RkZeqURd3VNqKn-WYrjKWS_jlOTMsc26NTIFsxmw