The head of the London thug department, and the minister in charge of policing, both received and ignored notice of cops circulating sexist insults.

It should not be a crime to say such things, but when cops do it, that implies they are not fit for the job. A police officer's duty is to protect the public; an officer who harbors a prejudice against some demographic group cannot be expected to do it. What's more, conversation that derides that duty will discourage them from doing it.