1984; George Orwell
This is a book about censorship and monitoring. Even if you haven’t read it, you’ll probably recognize some concepts. Big Brother, the government, is always watching you. Thoughtcrime is ideas and words you’re not even supposed to think about, because they’re not government approved. Also, there’s double-speak, where the government is purposefully simplifying the language to take away ideas and dumb down the populace. The country in 1984 is in a constant state of war, and history is rewritten just as constantly to reflect whatever the government says is ‘true.’ Not a cheerful book, but a thought-provoking one.
“War is peace. Freedom is slavery. Ignorance is strength.” -Orwell