The audience for Samantha Power last Friday appeared to be the usual crowd for talks at Princeton: half students interested in the subject matter at hand, and half older townies getting a taste of culture. “War Crimes and Genocide Today: What Can One Person Do?” was hosted by the Woodrow Wilson School, and it showed in the composition of the crowd. The students had a confused, sympathetic mixture of careerism and noblesse oblige; one, after asking what she should do to prepare for her trip to Bosnia this summer (that’s right, she’s going to Bosnia, folks! Sniper fire!), was happily offered a card from the wife of a UN official. The older ones, on the other hand, had the weary, insecure but comfortable look of those inhabiting the many, multiplying rings of power just outside the one that matters. “What can one person do,” of course, is heard by all of these people as “What can I do?”—a question that, in its necessity and its limitations, cuts to the heart of what is both brilliant and unfortunate about Samantha Power.