“If we’re serious about reclaiming that dream, we have to do more in our own lives. There’s nothing wrong with saying that,” Obama told a crowd estimated at 3,000. “But with providing the guidance our children need, turning off the TV set and putting away the video games; attending those parent-teacher conferences, helping our children with their homework, setting a good example. That’s what everybody’s got to do.”

He added: “I know some say I’ve been too tough on folks talking about responsibility. NAACP, I’m here to report, I’m not going to stop talking about it. Because as much I’m out there to fight to make sure that government’s doing its job and the marketplace is doing its job, … none of it will make a difference - at least not enough of a difference - if we also don’t at the same time seize more responsibility in our own lives.”

Amid building cheers, Obama declared: “When we are taking care of our own stuff, then a lot of other folks are going to be interested in joining up and working with us and taking care of America’s stuff. We can lead by example, as we did in the civil rights movement. Because the problems that plague our community are not unique to us. We just have them a little worse, but they’re not unique to us.”

Obama, who grew up without his father, has spoken and written at length about issues of parental responsibility and fathers participating in their children’s lives. Yet a similar speech by the Illinois senator on Father’s Day prompted an awkward rebuke from the Rev. Jesse Jackson, a Democratic presidential contender in 1984 and 1988, a protege of the Rev. Martin Luther King Jr. and a fellow Chicago political activist.

Jackson apologized last week after being caught saying on an open microphone that he wanted to castrate Obama for speaking down to blacks.