The history of any country, presented as the history of a family, conceals fierce conflicts of interest (sometimes exploding, most often repressed) between conquerors and conquered, masters and slaves, capitalist and workers, dominators and dominated in race and sex. And in such a world of conflict, a world of victims and executioners, it is the job of thinking people, as Albert Camus suggested, not to be on the side of executioners.
From the late Howard Zinn's A People's History of the United States.
I think being on the side of the suffering is many times underestimated. People think it doesn't matter what they do, simply because of the sheer hugeness of the dark side. I believe the opposite. What you think, what you say and do matters much more than you anticipate; and when organized, no force is big enough to stop your rightful initiative.