Then move on to the fact that not every govt employee is honest. Some will be involved in organised crime. What about your family do you not want organised crime to know? Do you trust everyone in the government who might encounter you today? Do you trust everyone who might encounter you next year? In 10 years time? 20 years? Gotta trust them all!
The rule of law exists, in part, so that the strongest does not always get their way. Do you trust your insurance company and their outsourced contractors with knowing everything about your family when they refuse to pay your legitimate claim and you have to go to court? They have vastly more resources than you already.
There's plenty more, think them through.
By the time you have it that these people who don't care, they also don't want to be naked in the street or have their children be naked in public, do want freedom and democracy rather than soviet style tyranny, and don't want to be effectively targeted by criminals... If you need to continue, it's a lost cause and you're dealing with bad faith or total un-fixable idiocy.
