I agree, I was stating that as a discussion point rather than a rebuttal of what you were saying. I don't think we have enough information as to the event itself and Itachi's own circumstances to say either way if Itachi comes out of this a war criminal, a manipulated pawn or a victim himself.
His character is being projected as one who is truly dedicated to the mission and would carry it out even at huge personal cost, with only his one flaw being his feelings getting in the way when it came to his brother. He is shown as otherwise kind, humble and content with being one of the crowd.