Anders Breivik raises his fist in a right-wing salute after being sentenced to 21 years in prison at the Oslo District Court on Aug. 24, 2012. Odd Andersen/AFP/Getty Images hide caption

itoggle caption Odd Andersen/AFP/Getty Images

This illustration, provided by artist Jonas Dahlberg, shows his vision for a "memory wound" near the Norwegian island where dozens of people died during an attack by a right-wing extremist in 2011. Jonas Dahlbert Studio/EPA/Landov hide caption

itoggle caption Jonas Dahlbert Studio/EPA/Landov