For Safguarding in schools, its illegal for a teacher to "do nothing" if they have concerns about the safety of a child or the conduct of a colleague. They can be personally prosecuted.
Is it time to have the same for police officers. They must all know who the dodgy ones are. We know that in the case of Sarah Everard colleagues knew about some of his behaviour, even if they didn't suspect the extent of it.
There have been videos of police officers watching while their colleagues assault young black men.
Is it time doing nothing was a crime in these situations?
Mind you I'm not sure who's going to arrest them, which is funny but it at all funny and of course these reports need properly following up which doesn't seem to happen at present.
Such a change of culture required, even among those who I'm sure see themselves as the good guys.