The mighty mouth of Fox News, Bill O’Reilly, has inveighed against rap music for more than a decade, and told President Obama’s most senior adviser Thursday that Obama should tell such rappers as Jay Z and Kanye West to “knock it off.”

O’Reilly has found rap a useful ratings tool. BillO is a self-anointed “culture warrior”, and a pundit whose audience is elderly, conservative and almost entirely white.

He was talking at White House counselor Valerie Jarrett, often nicknamed the “third Obama,” on the day the 44th President unveiled “My Brother’s Keeper.” The program is a public-private partnership of businesses, foundations and community groups charged with a mission of keeping young, troubled kids in school.

O’Reilly went off on a familiar rant. “They (minority kids) idolize these guys with the hats on backwards, and the terrible rap lyrics and the drug and all that,” he told Jarrett.

“You have to attack the fundamental disease if you want to cure it. Now I submit to you that you’re gonna have to get people like Jay Z, Kanye West, all these gangsta rappers to knock it off.”

At the White House, Obama suggested that the fundamental problem for troubled youth is often poverty, insecurity and lack of adult guidance. The President spoke of his own experience, saying: “I made bad choices. I got high, not always thinking about the harm it could do. I didn’t always take school as seriously as I should. Sometimes I sold myself short.”

O’Reilly has approached youth misbehavior with a tunnel vision toward rap music. BillO is not to be disagreed with, having interrupted Obama no fewer than 42 times in a pre-Super Bowl interview.

He also challenged Michelle Obama to come on his program and tell young girls to keep their pants zipped: “You stop having sex. You stop getting pregnant. That is wrong.”

Surveys show that not many minority girls, or young girls of any ethnic background, watch The O’Reilly Factor.

Jay Z hosted a posh fundraiser for President Obama in the 2012 campaign, and Kanye West has performed at Obama events.

“Look, either you tell them they do it or you audit them,” said O’Reilly. “That’s it.”

The words came from a man who once threatened to put “Fox Security” on the trail of a hostile caller.

O’Reilly has raged against rap. He called for a boycott of Pepsi after it signed up a rapper to promote its soft drinks. He even used the Trayvon Martin case, the 2012 shooting of an unarmed African American teenager, to morph into a lecture about rap music and crime by minority youth.

Valerie Jarrett kept her cool.