@hawkeye10,
Easily.
He specifically targeted innocents who are in no way responsible for the evils he perceives. If he happened to get one or two of his "bad guys" it was by chance, not design.
What or who is he revolting against? Norwegian society; the Norwegian people?
A true revolutionary focuses upon those who he believes are responsible for the state that he is resisting.
Only a madman thinks the children of politicians are responsible for what he opposes or that by killing them he will put an end to the politics and practices he abhors.
He is clearly a madman and no silly relativity argument makes it otherwise.
If you insist on affording him some credence, than give him a name that is closer to the mark: Anarchist.
And all true anarchists are madmen.