Michelle Obama shared candid stories about her life in her forthcoming memoir Becoming. According to The Washington Post, the former first lady shared her disdain of President Donald Trump.

Obama said that Trump threatened the safety of her family when he questioned the legitimacy of the U.S. birth certificate of her husband, Barack Obama.

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In 2011, Trump repeatedly challenged the former president’s eligibility to hold the office. He went so far as to say that Barack would not show his birth certificate because he was a Muslim who was not born in Hawaii in 1961.

“He doesn’t have a birth certificate, or if he does, there’s something on that certificate that is very bad for him,” Trump said during an appearance on The Laura Ingraham Show “Now, somebody told me, and I have no idea if this is bad for him or not, but perhaps it would be—that where it says ‘religion,’ it might have ‘Muslim.’ And if you’re a Muslim, you don’t change your religion, by the way.”

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In her book, Michelle spoke about living through Trump’s hateful claims.
“The whole [birther] thing was crazy and mean-spirited, of course; its underlying bigotry and xenophobia hardly concealed,” she wrote. “But it was also dangerous, deliberately meant to stir up the wingnuts and kooks.”

Michelle added, “What if someone with an unstable mind loaded a gun and drove to Washington? What if that person went looking for our girls?”

At the time of the birther scandal, the Obamas’ daughters, Malia and Sasha, were 13 and 10, respectively.

“Donald Trump, with his loud and reckless innuendos, was putting my family’s safety at risk. And for this I’d never forgive him,” the former first lady wrote.

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Also, Michelle recalled how upset she was after hearing Trump’s comments about inappropriately grabbing women.

“It was an expression of hatred that had generally been kept out of polite company, but still lived in the marrow of our supposedly enlightened society—alive and accepted enough that someone like Donald Trump could afford to be cavalier about it,” she wrote according to the Washington Post’s review.

After years of fueling the conspiracy theory, Trump ended his birther rhetoric in September 2016, just two months before Election Day.

“President Obama was born in the United States. Period,” Trump said at a campaign event, according to NPR. “Now, we want to get back to making America strong and great again.”

Becoming will be released on Nov. 13.