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Former White House aide Omarosa Manigault NewmanOmarosa Onee Manigault NewmanTrump campaign wants Omarosa to pay for nearly million ad campaign: report Trump hurls insults at Harris, Ocasio-Cortez and other women Pelosi makes fans as Democrat who gets under Trump's skin MORE, says there is no doubt in her mind that President TrumpDonald John TrumpMore than 300 military family members endorse Biden Five takeaways from the final Trump-Biden debate Biden: 'I would transition from the oil industry' MORE is a racist. 

“It is very clear Donald Trump is a racist and he’s trying to undermine our democracy,"Manigault Newman says in an interview with Hill.TV’s Jamal Simmons.

Manigault Newman, who was fired from her White House position of communications director for the Office of Public Liaison in December, is currently promoting a tell-all memoir about her time in the Trump campaign and administration.

Her position on Trump's alleged racism has changed since her ouster. Speaking to ABC News last year, she said, “Trump is racial but he is not a racist.”

Manigault Newman's book, "Unhinged: An Insider’s Account of the Trump White House," includes multiple allegations of racist and unstable behavior from the president, whom she has known since her time as a contestant on "The Apprentice."

When asked why she continued to work for Trump if he was a racist, she says he changed.

“Donald Trump is that friend that got a new job and became something else,” Manigault Newman says, adding he "became a monster."

“The things that Donald Trump has done. The way he toys with race. The way he’s trying to incite a race war. It is not funny.”

She pointed to the president's comments about African-Americans, including the controversy over NFL athletes kneeling during the national anthem. Manigault Newman adds that she challenged Trump, but saw no changes.