Every job candidate lives in fear that a Google search could reveal incriminating indiscretions from a distant past. But a new study examining racial bias in the wording of online ads suggests that Google's advertising algorithms may be unfairly associating some individuals with wrongdoing they didn’t commit.After learning that a Google search for her own name surfaced an ad for a background check service hinting that she’d been arrested, Harvard University professor Latanya Sweeney set out to investigate whether race shaped online ad results.