Former Egyptian President Hosni Mubarak is back in court today for the second session of his trial for corruption and the killing of protesters during the revolution that ended his rule. Clashes have erupted outside the courtroom between opponents and supporters of the Mubarak regime. The hearing could decide if the current head of the ruling Egyptian military council, Mohamed Hussein Tantawi, will testify at Mubarak’s trial. Tantawi served as Mubarak’s defense minister for two decades.