“It's we who win,” said guitar-strumming folk singer Lillebjoern Nilsen as he led the mass sing-along and watched the crowd sway gently in the rain. Many held roses above their heads, and some wept. The protest followed several days of defiant testimony from Breivik who has admitted he killed his victims in a blood soaked attack on Norway's multicultural society, but denied criminal guilt, saying he did so in self-defense. The crowd chose to sing a song -- “Children of the Rainbow” -- that extols the type of multicultural society Breivik has said he despised and one that he specifically dismissed during the trial as Marxist propaganda. People then marched several blocks, to the district courthouse where Breivik is on trial, close to the site where he set off a bomb that killed eight people on July 22. Thousands more Norwegians held similar musical protests in towns across the country. The protest came as survivors lined up inside the courtroom to take the witness stand and describe the bombing.