The problem really isn't the CIA, the problem comes from govern-cement being too big and being heavy handed against its people.
Like, on Star Trek, the ship monitors everything. Everywhere. All the time. And this doesn't upset the crew. The reason is they aren't under an unduly evil regime who is trying to cause terror.
And that is the core of the issue.
We have a govern-cement that is hell bent on terrorizing its citizens.
And the way they do that is they make it so anyone can be guilty.
The line between right and wrong is so blurred, that it is impossible to stay on the right side of the law.
So, then the CIA "spying" on people becomes not a "looking for the bad guys" it becomes a tool of terror. "They are watching!" "They are watching you!" Be afraid.
When, every big-data expert knows, that there is no way to sift through all of this data to find "you". However, anyone who comes under scrutiny of the govern-cement, they can find all the shit on you.