NEW YORK — Calls for a boycott of the Academy Awards are growing over the Oscars’ second straight year of all-white acting nominees, as Spike Lee and Jada Pinkett Smith each said Monday that they will not attend this year’s ceremony.

In a lengthy Instagram post, Lee said he “cannot support” the “lily white” Oscars. Noting that he was writing on Martin Luther King Jr. Day, Lee – who in November was given an honorary Oscar at the Governors Awards – said he was fed up: “Forty white actors in two years and no flava at all,” he wrote. “We can’t act?!”

In a video message on Facebook, Pinkett Smith also said she wouldn’t attend or watch the Oscars in February. Pinkett Smith, whose husband, Will Smith, wasn’t nominated for his performance in the NFL head trauma drama “Concussion,” said it was time for people of color to disregard the Academy Awards.

“Begging for acknowledgement, or even asking, diminishes dignity and diminishes power,” she said. “And we are a dignified people and we are powerful.”

She added: “Let’s let the academy do them, with all grace and love. And let’s do us differently.”

Last year’s all-white acting nominees also drew calls for a boycott, though not from such prominent individuals as Lee and Pinkett Smith. Whether it had any impact or not, the audience for the broadcast, hosted by Neil Patrick Harris, was down 16 percent from the year prior, a six-year low.

This year, Academy of Motion Pictures Arts and Sciences President Cheryl Boone Isaacs has made a point of presenting a more inclusive show. The Feb. 28 broadcast will be hosted by Chris Rock and produced by “Django Unchained” producer Reginald Hudlin and David Hill. On Saturday, Rock, unveiling a new promotion for the broadcast, called the ceremony “The White BET Awards.”

The academy didn’t respond to messages left Monday.

When Oscar nominations were announced Thursday, Isaacs acknowledged she was “disappointed” that all 20 acting nominees were again white.

— From news services