The people running Tor for intel don’t give a damn about you downloading “C Structures for the Down and Out” or “Horus Lupercal, Saint or Savior—Another Take”, they have bigger fish to fry and don’t need that distraction
I mean, the latter seems to be a bit heretical. In fact, inquisitors have been dispatched to get rid of that. The Emperor Protects!
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But that is a good point. It's doubtful that the intelligence community would care too much about people downloading books in the TOR Network. Or if they did get an interest in that, it works have to be a very special book, indeed.