Description:Day two of the trial of Anders Breivik, the Norwegian far-right gunman who massacred 77 people last summer is underway in Oslo Tuesday (April 17) After the prosecution's introduction on Monday (April 16), Breivik will be questioned. He is scheduled to testify for about a week. Breivik has said he acted in defence of his country by setting off a car bomb that killed eight people at government headquarters in Oslo last July, then killing another 69 people in a shooting spree.(1:19)