Norwegian killer Anders Behring Breivik has justified his lone slaughter of 77 people last July, saying it was part of his campaign to defend Europe against a wave of Muslim immigration.
The 33-year-old began his trial in Oslo by telling judges that he did not recognise the court.
He admitted that he carried out the killings but denied any criminal responsiblity, pleading not guilty to terrorism charges.
His victims’ names were then read out before the court heard how Brevik planned his massacres.
Prosecutors also played previously unseen footage of the Oslo car bombing and retraced his actions during a shooting spree on the nearby island of Utoeya.
Disguised as a police officer, he lured some of his mostly teenaged victims out of hiding before shooting them dead.
They had been attending a summer camp organised by the governing Labour Party, which Breivik accuses of being overly tolerant on immigration issues.
The defendant sat without visible emotion until the court was shown his 12-minute video that rails against Islam and warns of an impending Marxist Islamic takeover of Europe.