In her senior thesis at Princeton, Michelle Obama wrote that her experiences at the Ivy League university made her "far more aware" of race and determined to work for the black community. The 23-year-old school papoer, posted on the web site Politico.com, shows the young Michelle Lavaughn Robinson struggling to feel at home in the university. ...For the thesis, "Princeton-Educated Blacks and the Black Comnmunity," Obama sent out a survey to 400 black alumni, asking them about their racial attitudes before, during and after their stints on campus. Eighty-nine responded to the study, which Obama said "attempts to examine the...