an example is their war on peer-to-peer file sharing. it can be used for legitimate purposes and its actually in many cases more efficient than the basic client-server architecture, but regardless the government demonizes it and has even passed laws to restrict it.
Peer 2 Peer is what is always thrown up as the government infringing on the "rights" of people.
However, lets look at something that happened at my job recently.
My company was informed by Amazon that their web-crawl bots had spotted several of our books available for free on the internet. After several hours with Amazon customer service they finally begrudgingly sent me the link. (Amazon was very reluctant to talk about shit to me, it was up to the company I worked for to prove our innocence) I followed the link, and what did I find?
Over 125,000 books, all on PDF, all available for free.
We're talking textbooks that ran easily $100 USD each, entire book series that are available right now. Many of them (upon examination of the PDF's) proved to be Amazon eBooks.
The minimum downloads I found was on a rather esoteric philosophy book, which was 200. The max I found was over 400K downloads on a textbook that ran $195.
And that doesn't even count the zip files full of small press or independant eBooks that were listed by date and contained hundreds of eBooks.
THAT'S the kind of P2P shit I support demonization and restrictive laws against.
Not someone putting up MP3's of their shitty musical talent, or the owners of the IP and copyright putting up their material for free.
The big thing I've read a lot of people who support BTC support is that people get paid what for what they do. Why should P2P allow other people to easily rob people who worked hard to produce something?
In that case, it was good to be able to go to law enforcement and say: "This is outright theft", and get some resolution.
Back to original question: If you live in a nation it is not wrong to use government services of that nation.
You drive on roads, right? You went to school, right? Your food isn't full of maggots and isn't 30% sawdust, right? You medication is actually medication and not rabbit shit marketed as smart pills, right?
Almost everyone uses government services every day, whether they know it or not, so using them is not wrong, whether you pay taxes, or do not because you're below the poverty line and can't afford taxes.