Tsarnaev Pleads Not Guilty To Boston Marathon Bombing
Suspected Boston Marathon bomber Dzhokar Tsarnaev was arraigned on Wednesday. Tsarnaev has been indicted on more than 30 charges, including using a weapon of mass destruction in the attack, which killed three people and injured more than 260. He is also charged with the murder of MIT police officer Sean Collier. Wednesday's court proceeding were Tsarnaev's first public appearance since he was captured four days after the bombings.