Teardrops run down the face of a woman attending a vigil after a 15-year-old Roxbury teenager was killed in a midday stabbing near Dudley Square in Boston on Wednesday, July 11, 2012.

Teardrops run down the face of a woman attending a vigil after a 15-year-old Roxbury teenager was killed in a midday stabbing near Dudley Square in Boston on Wednesday, July 11, 2012.