Nearly a decade after the NAACP condemned a “virtual whiteout” in broadcast TV, the civil rights group said major networks have stalled in their efforts to further ethnic diversity on-screen and off.

Barack Obama will be a one-man television blitz on Wednesday, saturating prime-time with a 30-minute ad and popping up on the buzzy late-night TV scene. He is also giving an interview to a prominent network news anchor, and appearing with fellow Democratic star Bill Clinton at a rally that is timed to hit the late-evening […]