Michael from Muckrock sez, "The problems with various government watch lists, particularly the TSA's, are well known, but a new release of documents shows just how problematic large-scale government tracking can be: A recent FOIA request to the FBI for the files on late Irving Adler, activist, turned up plenty of reading material, but it was about the wrong Irving: An examination of documents showed that the files another Irving Adler, an Army veteran, found himself on the wrong end of intense questioning despite universal assertions that he was a 'loyal and patriotic American."
The investigations hounded the second Irving for four years until the FBI realized it was watching the wrong man, and the boring Irving ultimately only cleared himself when it was shown he was serving abroad during the time the FBI thought he was in Long Island.
Surely these kinds of mistakes won't happen with modern databases.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.