Rev. Al Sharpton will lead an anti-Oscars rally prior to Sunday night's awards ceremony and will urge advertisers to pull back amid controversy over nominees' lack of diversity.

"We will put the Academy on notice," he posted on his official Facebook page.

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Critics swiftly began blasting the Oscars after this year's nominations were announced over the lack of diversity among nominees. #OscarsSoWhite quickly started trending again.

Sylvester Stallone, who claimed a best supporting actor Golden Globe for his role in "Creed," is up for a similar Oscar. The movie's black star and director, Michael B. Jordan and Ryan Coogler, were not among nominees for either a Golden Globe or Oscar.

Idris Elba was up for a best supporting actor at the Golden Globes for "Beasts of No Nation" but received no Oscars nod.

This tweet succinctly captured the sentiments of many:

The issue has sparked plenty of commentary and some controversy. Actress Janet Hubert, who played Aunt Viv on "The Fresh Prince of Bel-Air," lambasted actress Jada Pinkett Smith's call for a boycott.

"First of all, Miss Thing, does your man not have a mouth of his own with which to speak?" Hubert asked in a Facebook video, referring to actor Will Smith, Hubert's co-star on the sitcom and Pinkett Smith's husband, who was not nominated for his lead role in "Concussion."

Actor Tyrese Gibson was straightforward about his feelings.

"I know more white people than most white people, so I don't have a racist bone in my body," he said during an interview with People. "We understand the presence of the LGBT community and people that really rocking for homosexual and gay rights. If they purposely left out all homosexuals and gays from being nominated for an Oscar, if the host, Chris Rock, was a homosexual, he would have stepped down already. This is the way you affect change."

Gibson did congratulate his friend Leonardo DiCaprio, who is nominated for "The Revenant," and said it's a shame DiCaprio's trophy bid comes amid all the racial strife.

"Leonardo is one of my good friends. I've got his number in my phone," he said. "I wouldn't want Leo to not go get his trophy. This is not us saying we're against the Oscars. We're just saying, yo, this is not cool. You can't be doing this in 2016. Stop playing in 2016. This is America."

Rock seems primed for a big night: