WASHINGTON (Reuters) - Blacks lag far behind whites in economic status, health and education and are in danger of "a great backslide" from the gains made since the civil rights movement began, the National Urban League said on Wednesday. "This year ... almost every indicator available shows that progress for black America is stalling or falling," said Marc Morial, the league's president, at a briefing to release the group's annual Equality Index. The index found the overall status of blacks in the United States stayed at 73 percent of the status their white counterparts have, virtually unchanged from the 2004...