LOS ANGELES • 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.

Television shows of the future could be even less inclusive because of a failure to cultivate young minority stars and to bring minorities into decision-making positions, NAACP President and Chief Executive Benjamin Todd Jealous said in a report released this week.

The effect on the country could be profound, Jealous said. “This is America: So goes TV, so goes reality. We don’t think it’s any accident that before we had a black president in reality, we had a black president on TV,” he said, referring to the chief executive portrayed by Dennis Haysbert on Fox’s “24.”

A “critical lack of programming by, for or about people of color” can be traced in part to the lack of minorities who have the power to approve new series or make final creative decisions, said Vicangelo Bulluck, executive director of NAACP’s Hollywood bureau.

The National Association for the Advancement of Colored People calls on networks to revisit a 2000 agreement to diversify the ranks of actors, writers, directors and executives.

It also seeks to establish a task force with network executives, the NAACP and other civil rights groups.

The report raises the possibility of political action if progress is lacking, including a boycott against an unspecified network and its major advertisers or class-action litigation against the networks and parent companies.

Particularly disturbing, Jealous said, is the course charted by the CW, born of the defunct UPN and WB networks that had featured a number of black-oriented series including “Moesha” and “The Steve Harvey Show.”