Using the benefit of compressing history there have been no end of stories about bad policing or controversial policing in Britain over the last 40 years. I have no idea whether, adjusted for a smaller population and factoring in that British police are not routinely armed the situation is as bad as in the USA or not.
There have been stories of individual officers who are corrupt, violent, racists, rapists or whatever.
However some of the bigger stories over the years:
The SPG (Special Patrol Group). A specialist and prestigious police unit in London set up to deal with violent disturbances. After a black man, Balir Peach, was killed (by a blow to the head) at an Anti-Nazi demonstration, the SPG were investigated and found to routinely carry illegal weapons including metal bars and baseball bats. They already had - in the media - a reputation for thuggish violence and were disbanded in 1987. No one was ever convicted over the death of Blair Peach - a respectable teacher.
The Stephen Lawrence case. Two young black men minding their own business are walking through London in 1993 when a gang of white thugs chase them and Stephen Lawrence is stabbed to death. A gang of five white guys - some the sons of notorious criminals - were identified as suspects but the police investigation was botched and initially none were convicted. Eventually, 18 years later, two would be convicted after the law on “double jeopardy” was changed.
The public outcry at the murders not being convicted led to an inquiry investigating witness intimidation, police corruption and most famously it was concluded the Metropolitan Police (the London Police) were “Institutionally Racist.”
More recently there have been several cases across the UK where gangs of (British nationality but ethnically) Pakistani men have targeted vulnerable young (13 or even younger so underage) white girls and sexually abused them (repeated rape and enforced prostitution) for years. That these crimes continued for years is being blamed on police forces across the country too afraid to investigate crimes by asians in case they get accused of institutional racism again.
Victim Blaming in The Police 1982. Thames Valley Police (Outer London and covering one of the most prosperous parts of the UK) allowed a “Fly on the wall” documentary to be made. Infamously it showed three middle aged police officers questioning a vulnerable young woman about her rape: The usual stuff about her clothes, her sex life… The policemen later claimed they were being supportive but public outcry at how rape victims are dealt with led to changes in the law and in procedure.
Rachel Nickell 1992. A shocking murder as an attractive young mother was sexually assaulted and stabbed to death in a London park during the day in front of her infant child. Her attractiveness and the story she was discovered with her three year son hugging her, pleading “Wake up mummy” after he had placed a piece of paper on her wounds as a makeshift sticking plaster caught the public attention and the police were under enormous pressure to find the murderer.
The police fancied a local weirdo (a virginal, unemployed loner) called Colin Stagg (if it is important he is white like the victim) who had no previous criminal history of this nature and there was zero forensic evidence linking him to Nickell but he was a local, considered a weirdo and did routinely walk in the park. He was questioned, released but the police were so convinced he was their man they sent a large breasted (but otherwise largely untrained and unqualified) policewoman to go undercover and befriend him, seduce him and ultimately make him an offer: If he admitted (in the bedroom) he murdered Nickell she would have sex with him. The virginal Stagg never actually admitted murder (in this “social” environment) but he did “play along” with undercover “Lizzie” and eventually the police pounced.
It was thrown out of court as wholly unacceptable entrapment and Stagg eventually got a formal apology from the police and £706,000. The policewoman resigned from the police and got £125,000 while the whole police investigation cost at least £3 million.
Eventually the real killer - a violent madman who had killed before - was convicted after a cold case review in 2008. Along the way the Metropolitan police were slated for blatant entrapment, use of an undercover policewoman who had no training in undercover work plus collusion with the press - the police had been releasing damaging stories about Stagg as they built their case against him and tried to reassure the public a murderer would soon be caught.
I could go on but this is already long enough. But there are many, many more stories if required.
TCMF-2L