In this powerful sequence of TV images and essay, Claudia Rankine explores the personal and political unrest of our volatile new centuryI forget things too. It makes me sad. Or it makesme the saddest. The sadness is not really aboutGeorge W. or our American optimism; thesadness lives in the recognition that a life cannot matter.The award-winning poet Claudia Rankine, well known for her experimental multigenre writing, fuses the lyric, the essay, and the visual in this politic