Oscars Host Chris Rock Comments on Lack of Diversity in Award Show's Nominees

This year's host tweeted his thoughts Friday.

And he's not the only celebrity chiming in on the issue over the weekend.

"At the Oscars ... people of color are always welcomed to give out awards ... even entertain," Pinkett Smith, 44, tweeted Saturday, before adding, "But we are rarely recognized for our artistic accomplishments. Should people of color refrain from participating all together?"

"People can only treat us in the way in which we allow. With much respect in the midst of deep disappointment," she concluded.

The criticism has gotten so loud, it's even reached Academy President Cheryl Boone Isaacs, who is African-American.

Although Isaacs was not available for an interview with ABC News, she told ABC station KABC-TV in Los Angeles, "We are being louder and louder and we are going to continue this conversation and we're going to do more than just talk."