They were her, your, and our political opponents (junior division.) They were being taught a bunch of crap about Israel.
The adolescent child and ideological heir of a bitter opponents is not a terrorist. They have as yet only thought bad things, been taught bad things --- and we don't gun people down for that. Not one of them, to my knowledge, had murdered somebody in cold blood for political effect. That's what Breivik did, and it's why he, and not they, can be accurately described as terrorist.
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)?