In my youth my primary social justice commitment was through Amnesty International. As an affluent white male I enjoyed freedoms that I thought ideally everyone should share; in the 1980's we had had the vine of United States support for repressive regimes that were nominally anti-Communist bearing cruel fruit and I in my small part of the world wanted to do something about that. It was a more active support Amnesty International sought back then; nowadays they just ask me for money. We members were encouraged to write to foreign government officials to urge them to take care of political prisoners that we named, the idea being that as long as they knew that they were seen the cruelty would diminish. One letter per prisoner, because they were all human beings, not just a faceless group. I have no independent way of verifying if the hundreds of letters I wrote eased any suffering; I know that they changed me. Selfishly I am grateful. At the time I made a point of reading journalism...