CNN Opinion rounds up ten of the most shared pieces of 2013 . Graduation rate : 72.5 % . LZ Granderson : On not-so normal days , teachers are also asked to be heroes . Bruce Schneier : The NSA is spying on us all. David Rothkopf : Hillary Clinton is likely to be the next president of the U.S .
CNN Opinion rounds up ten of the most shared pieces of 2013 . LZ Granderson : On not-so normal days , teachers are also asked to be heroes . Bruce Schneier : The NSA is spying on us all. David Rothkopf : Hillary Clinton is likely to be the next president of the U.S .