BALTIMORE - A white woman beaten by a group of black students on a bus has prompted a hate-crime investigation, attempts by transit officials to reassure riders of the safety of the system, and radio talk-show chatter over comparisons with the Jena Six case. The uproar prompted two leading black politicians to issue statements decrying the attack. Sarah Kreager, 26, suffered broken facial bones and other injuries after she was punched, kicked and dragged off the bus Tuesday afternoon. Kreager's companion, Troy Ellis, was also attacked, but not beaten as severely. Kreager has an unlisted phone number and attempts to...