The National Organization for Marriage (NOM) on Monday began airing an ad in North Carolina that blasts President Barack Obama for his endorsement of gay marriage.

The 1 minute spot features Dr. Patrick Wooden, an African-American pastor who ministers at Raleigh's Upper Room Church.

“It was the African American community that helped [President Obama] win here in North Carolina,” Wooden says in the ad. “But President Obama has turned his back on the values of our community with his strong endorsement of the homosexual movement. We worked hard to pass the Marriage Protection Amendment this past May. With the strong support of the African American community, the amendment protecting marriage as the union of one man and one woman passed overwhelmingly. The very next day, President Obama came out for homosexual marriage. Now his campaign leaders are working to deny North Carolina's ability to define marriage, and they want to overturn our state marriage amendment altogether. Join me in saying 'no more' to President Obama.” (The audio is embedded on this page. Visit our video library for more videos.)

NOM said it plans to spend $34,000 airing the ad in the Raleigh media market and it could expand to other markets.

The ad campaign kicks off a week before Obama arrives in North Carolina to accept the Democratic nomination.

“The goal of our advertising campaign is to issue a wake-up call to the African-American community in North Carolina that President Obama does not represent the values that they have fought to protect,” Brian Brown, president of NOM, said in a blog post.

(Related: Patrick Wooden says sodomy wrong only for gay men.)