They were advocating for the causes of Islamic murderers. Why else would Norweigians be involved in anti-Israel rallies? Do you need to see a picture (they are available)?
I also read that when Breivik started shooting down the campers, some of them for a few moments thought it was a skit, a piece of make-believe intended to dramatize how the Israelis shoot down unarmed Palestinian civilians. Wrong-o.
So: (1) First these kids are made the victims of lying propaganda
(2) Then comes Breivik, who actually takes the anti-Zionist lies and transforms them into reality. The word made flesh! He literally does shoot down unarmed civilians.
Got that? First their own Norwegian Labour leaders, their parents, the media, the schools, lie to the kids, slander Israel and its supporters; then Breivik turns it 'true' after all, by killing them.
Their parents, the Labourites, victimized them by falsehood; Breivik did far worse and victimized them by murder. So they are twice victimized.
And then a third thing: now even more Norwegians are convinced that the lies are true: that the Muslims are innocent victims and the anti-jihad movement is run by either psychotics or criminals and probably both.
As Talleyrand would say, it was worse than a crime, it was a blunder.
Breivik cut the legs out from under his own movement, which has now been smeared with the blood of beardless boys and bluejeaned girls and set back for a generation.
Repulsively evil and useless to boot: it certainly illustrates the maxim, "Sin makes you stupid."