Yes, functional states should have extremely good oversight .. in reality they "mostly do" but with cracks that allow unwanted behaviours to sneak through and sometimes become normalised.
eg. recent revelations that SASR types are "blooding" new members with unsanctioned kills in war zones. Or regular joe LEO types using surveillance powers to stalk ex's. Or total innocent gets railroaded by tangential "evidence" simply because they chance to tick all the boxes for a needed arrest and the actual perp was overlooked | unseen.
> I would be very concerned if your knitting grandma was an active member of a drugs and arms dealergroup.
And yet an actual sergeant at arms type of an organised biker gang based in Australia used knitting terminology key phrases in just such a group to organise international transfers of "packages".
The person in question was a NZ background stone cold killer with a special forces background.
( Yes, most crims are "dumb" | "lazy" and yet a good few understand covert messaging, not all can be caught with a fake encrypted phone honey net trap )
These are all real concerns and examples of things that have actually happened.