Four years ago, Evita Broughton celebrated Kwanzaa for the first time with her family _ lighting a candle each night and discussing the respective principle.

But she hasn't celebrated the holiday since.

"It felt like a school project that lasted seven nights," said Broughton, 27, of Marietta, Ga. "I didn't feel like I had that connection. I tried to share my experiences with others but no one else was celebrating it."

Kwanzaa, which runs from Dec. 26 to Jan. 1, may be a mainstream holiday with greeting cards, postage stamps and public celebrations, but experts say its popularity is receding.

It will not be getting a boost from the first family. The Obamas do not personally celebrate Kwanzaa, according to White House aides, though a written message from the president is likely, in keeping with the practice of his most recent predecessors, Presidents George W. Bush and Bill Clinton.

Kwanzaa was created in 1966 by Maulana Ron Karenga, a professor at California State University, Long Beach, who is also executive director of the African American Cultural Center in Los Angeles.

The holiday was a way for African Americans to honor their culture, but it was also part of the black power movement of the era. The big boom in Kwanzaa came during its first two decades, according to Keith Mayes, author of "Kwanzaa: Black Power and the Making of the African-American Holiday Tradition."

But he said participation has leveled off. Based on his research, he estimates a half-million to 2 million people in the U.S. celebrate Kwanzaa, out of about 40 million Americans identified by the U.S. Census as black, including those who are multiracial.

Mayes, an assistant professor of African American & African Studies at the University of Minnesota, says the black power movement was the "engine" for Kwanzaa, and the holiday faded as the movement receded. It started amid talk of revolution, black power and community control, but "in the '90s and in the 21st century, it's no longer referenced that way," said Mayes, adding that white institutions celebrate it as part of a broader diversity initiative. "It's all about inclusion, diversity, goodwill, multiculturalism."

Although Kwanzaa started here, it has become a Pan-African holiday. The African American Cultural Center places the number of those who observe Kwanzaa worldwide at 30 million, but even that is a small fraction of the hundreds of millions of people of African descent all over the world.