[lmkg]

Entirely setting aside the current debate on whether police have enough accountability for the unique powers they wield...

Public sector employees are subject to extra scrutiny that private-sector employees are not. That's simply part and parcel of being employed by a democratic government. Your employer represents the general public, and therefore you are accountable to the general public.

For example, government employee salaries are public record. And not just in-theory records, this data is often easily-searched online databases. If you're employed in the private sector, having your compensation disclosed is considered a breach of privacy; it's considered mandatory in the public sector.

So yeah, I think it's reasonable to expect a certain level of workplace surveillance in the public sector that would be unacceptable for a private company.