Anders Behring Breivik during his trial in August 2012. He was sentenced to a maximum sentence of 21 years, followed by preventative custody, for the terrorist attacks of July 22, 2011, when he bombed Oslo's government quarter, killing eight, before going on to massacre 69 people, most of them youths, at a political summer camp on the island of Utøya.
REUTERS/ NTB Scanpix

Anders Behring Breivik during his trial in August 2012. He was sentenced to a maximum sentence of 21 years, followed by preventative custody, for the terrorist attacks of July 22, 2011, when he bombed Oslo's government quarter, killing eight, before going on to massacre 69 people, most of them youths, at a political summer camp on the island of Utøya.