So are priests, scout leaders & teachers molesting children. People with issues are attracted to certain types of jobs where they have authority. There are good and bad in every profession. In some professions however you can cause a lot of harm if you have issues. The problem is with the hiring of people.
It’s like that airline pilot that had problems that were ignored. It eventually comes to a head and he never should have been flying that plane. Some people should never be teachers, cops, priests etc.
The number of cops who are problems is very small compared to the overall number of them who do a good job.