> * Police are investigating a crime and have not made all details of the crime publicly known.
This isn't exactly the same as the government itself having secrets, but a secret police can generate a lot of problems, as you're doubtlessly aware.
> * The government maintains a health insurance system for the disabled, poor, and elderly.
These are not government secrets either. The secrecy is for people who are being served by the government, not for employees of the state.
> * Three high-ranking members of ISIS are in fact CIA informants
> * A defense contractor is building a secret weapon that is decades ahead of competing powers.
> * The military is performing operations somewhere in the
world.
> * The military is planning an amphibious assault on Beachhead B.
These are militaristic problems created by having a state in constant war to begin with. These are webs of lies that have to be perpetuated due to initial lying.
As an outsider, it's really amazing how blind US citizens are to their own country's incessant war-mongering. They breed war with lies and have to maintain that war with lies.