http://www.volokh.com/2013/01/14/aaron-swartz-charges/
http://www.volokh.com/2013/01/16/the-criminal-charges-agains...
You might instead argue that the law is ridiculous (e.g. I would agree that Swartz's conduct is not serious enough to warrant a felony conviction).
You might argue that there were certainly other cases which were more deserving of a U.S. prosecuting attorney's time (though I don't know how we would confirm or refute that). But the charges themselves are well supported by the indictment.