One of the key worries about copyright is how it can be used as a tool for censorship if not watched carefully.
Stephan Kinsella points us to an example I was not previously aware of, in which eccentric and reclusive billionaire Howard Hughes once purchased the copyrights on a series of articles about himself in order to try to block the publication of an unauthorized biography that was largely based on those articles.
Looking into this further, what's amazing is that this strategy almost worked.