Like his wife, Jada Pinkett Smith, Will Smith will skip the Academy Awards amid disappointment with a dearth of minority nominees.
"Diversity is the American superpower. That's why we're great," the A-list actor said on ABC's "Good Morning America" Thursday.
Hollywood should be showcasing the country's diversity, but "when I look at the series of nominations of the Academy, it's not reflecting that beauty," Smith said.
Smith said he didn't know that his wife was going to post a Facebook video announcing her own boycott of the Oscars.
"I was out of the country at the time," he told Robin Roberts in his first interview on the subject.
When he watched the video, "I was knocked over, you know? I was happy to be married to that woman."
He acknowledged his stature in Hollywood and said "if we're not a part of the solution, we're a part of the problem." The video, he said, "was her call to action -- for herself and for me and for our family to be a part of the solution."
The filmmaker Spike Lee has also said he will skip this year's awards show. Lee and the Smiths have not called for a wider boycott, however.
Smith, the star of the drama "Concussion," was in the running for a best actor nomination this year, but didn't get one. For the second year in a row, none of the nominees in the top categories are minorities, which has spurred a week of outrage and tinsel town soul-searching.
Roberts asked Smith to respond to people who "who feel the only reason she made those remarks is because she was upset that you didn't receive a nomination."
"There's probably a part of that in there," he said. "But for Jada, had I been nominated and no other people of color were, she would have made the video anyway. We'd still be here having this conversation."
"This is so deeply not about me," he added. "This is about children that are gonna sit down, and they're gonna watch this show, and they're not going to see themselves represented."
Smith echoed what fellow superstar actor George Clooney said earlier in the week: that it feels like Hollywood is slipping in "the wrong direction" when it comes to diversity.
The issues confronting the Academy of Motion Picture Arts and Sciences are related to wider challenges in the country, Smith asserted: "There's a regressive slide towards separatism, toward racial and religious disharmony. And that's not the Hollywood that I want to leave behind. That's not the industry, that's not the America I want to leave behind."
Related: Oscars president 'heartbroken' about lack of diversity
The Los Angeles Times reported Thursday that the academy will "weigh new rules intended to encourage more diversity among its membership and its nominations" at a regularly scheduled board meeting next week.
"Among the options the board could choose are expanding the number of films in the Best Picture category to 10 every year, expanding the number of acting nominees in each category and changing the way the academy invites new members by allowing prospective members to put themselves forward, rather than waiting to be asked," the Times said.
