Ebbie I don't have time to check out what somebody's reading if they're suspected of selling heroin. If a specific person kills somebody and we develop probable cause on that specific person, we'll make the time. If I find a book report or a photo of a specific book at a crime scene, I might try to find out who checked out that book, in which case accurate records might come in handy. It would be a long shot even if such databases were kept.

But the idea that I might go searching databases to figure out who's reading subversive literature and then hunt them down and oppress them is just a ridiculous paranoid fantasy. For one thing, my bosses aren't willing to pay me the overtime, and I sure as hell wouldn't do anything that boring for free.