It’s horrible, it deserves severe legal punishment, but “plague” to me implies a broad pattern.

so you would call it a "plague" if it was just one guy? hopefully you can see how ridiculous that would work out in practice.

1. 22 "investigated" as part of a wide scope review, ie, it could mean an entire department was investigated 2. review was for "staff internet usage" so those sanctions could be for anything from regular internet porn or gambling sites or whatever else violates their employment conditions 3. OP said the plague was among "top-level police officers"