Satellites take pictures detailed enough to show my house and car and Google drives by to take "street views" and share them with the world.
In 1984 (written in 1949), George Orwell described a society where telescreens watched citizens in their homes around the clock. How many things do you do in a day that are still private?
So who needs this privacy? I do. You do. Those who assert they don't fear surveillance because they have "nothing to hide" forget that our entire identities consist of the private, secret thoughts, attitudes and actions that only we are privileged to own.
A few writers have expressed this well. I encourage you to read:
Neither the Democrats nor the Republicans care much for protecting the 4th Amendment and all of us from the snoopers. But this may well be the critical human rights issue of our time.