Attorney General's testimony on Aaron Swartz raises more questions than answers

US Attorney General Eric Holder this week strained to convince senators that federal prosecutors exercised "good prosecutorial discretion" in handling the indictment of 26-year-old Aaron Swartz. Yet his testimony before the Senate Judiciary committee raised more questions than it answered. At a broader level, the exchange between the Attorney General and the Judiciary Committee shines a spotlight on inconsistencies in the justice system. Cyber criminals often seem to face disproportionately aggressive prosecution and sentencing -- while major financial institutions that had a role in creating the financial crisis remain, by the attorney general's own admission, untouchable.