| Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., listens to Dorothy Johnson-Speight as she hold photos of her son Khaalia Johnson, 24, left, and Justin Donnelly, 19, who both died from gun violence in Philadelphia as Clinton makes a campaign stop at the Westside YMCA in Philadelphia, Friday, April 11, 2008. Barack Obama and Clinton are gingerly threading their way between two of the most politically charged numbers in Pennsylvania |