Tens of thousands protest at Norway Breivik trial

OSLO - Around 40,000 people gathered in Oslo on Thursday to sing a popular children's song ridiculed by Anders Behring Breivik, who killed 77 people last July, as a show of protest against the right-wing activist's anti-immigrant views.

A man participates in the singing of a popular children's song at Youngstorget Square in Oslo April 26, 2012.  [Photo/Agencies]

Thousands more joined in song in towns across the country to sing "Children of the Rainbow", a song that celebrates the sort of multiculturalism that Breivik said that motivated his killing spree.

The 33-year-old has denied criminal guilt, insisting his victims were "traitors" who deserved death for embracing multicultural values which, in his view, open Europe to a slow-motion Muslim invasion.