FBI agent tries to copyright torture manual, inadvertently makes it public
motherjones.com
motherjones.com
http://www.motherjones.com/politics/2013/12/fbi-copyrighted-...
Basically, this version is a sensitive detector for describing government wrongdoing, but it is not specific - it doesn't prove that certain forms of wrongdoing were not in the training manual.
Because the two versions are similar, a side-by-side comparison allows a reader to deduce what was redacted in the later version. The copyright office does not allow readers to take pictures or notes, but during a brief inspection, a few redactions stood out.