Talk of "balance" here is quite insidious. Although it all sounds very moderate, the implication is that we should have some concern for justice but not too much: a proper sense of balance requires us to give up on justice when the costs of pursuing it (to those who would benefit from injustice) become too high. Now A and C might not think this in the choice between policy1 and policy2 above: there the cost to them of justice is not very great. But if we imagine that a new set of policy choices presents itself (say, on September11), which greatly increases what A and C have to lose from sticking with justice