If you define “violating someone’s civil liberties” as an actual case of a specific human being who was deprived of civil liberties, he’s correct. In all of the documents released by Snowden and Greenwald, there hasn’t been a single case I’m aware of that shows any specific person’s civil rights were violated.

But obviously there’s more to it than that. It’s like passing a law that says the government can confiscate all your property at will, then saying “but nobody’s property has actually been confiscated!” The law is still wrong and shouldn’t exist, as a matter of principle.