Yes, but there are institutionally inherent problems in police forces, where the "decent" officers still don't feel able/willing to report the bad apples, presumably for fear of reprisals. Police officers work together mostly, in pairs, teams, etc., so I find it pretty hard to believe that the decent ones are blissfully unaware of the bad apples they work with on a daily basis. If they're not reporting their concerns, then we need to find out why. Perhaps there needs to be a whistle blowing system where the officers reporting are guaranteed protection from reprisals?
It's not just sexual abuse, it's all kinds of crimes including being too "cosy" with known offenders, letting "friends" off when caught committing offences, etc.
I was in the police for a relatively short period of time in the late 80s, and although I didn't see any overt sexual abuse or other criminal acts by colleagues, I really did have strong suspicions about some of them, simply by the things they said, their attitude, and there was a lot of sexual innuendo towards both female police officers and station staff and women in general - all passed off as "banter". When the sergeant and inspector also engaged in that kind of "banter", you really don't know where to report to as they were the two immediate "line managers" and more senior officers barely ever attended our station.