President Donald Trump has been moving to take greater control over the Smithsonian Institution and said earlier this week that the organization focuses too much on “how bad slavery was.”

President Donald Trump threatened to unleash his attorneys on the Smithsonian, saying the institution was fixated on “how bad slavery was.”

President Trump's adviser leading a review of Smithsonian museums' content defended the move as shifting the focus to progress, rather than dwelling on past mistakes, and argued that the museums should be geared toward pride in America's growth.

U.S. President Donald Trump suggested on Tuesday he will pressure the Smithsonian Institution, a premier museum, education and research complex for U.S. history and culture, to accept his demands, just like he did with colleges and universities by threatening to cut federal funding.

Through its 21 museums, 21 libraries, 14 education and research centers and a zoo, the Smithsonian Institution’s collections are expansive and cover every aspect of U.S. history, including more than 200 years of slavery.

In April, the National Museum of African American History and Culture sparked controversy after it announced it would return several artifacts to their donors, including a Bible carried during a civil rights protest and Harriet Tubman’s book of hymns, NBC News reported.

Trump wrote: "The Smithsonian is OUT OF CONTROL, where everything discussed is how horrible our Country is, how bad Slavery was, and how unaccomplished the downtrodden have been — Nothing about Success, nothing about Brightness, nothing about the Future."

President Donald Trump escalated his rhetoric against museums and alleged “WOKE” exhibits on Tuesday, saying “everything” is centered on highlighting negative aspects of American in story, including “how bad slavery was.

President Trump confirmed the White House is doing a review Smithsonian museums, where he complained "everything discussed is how horrible our Country is."

A White House official told NBC News that Trump plans to expand his review of museums beyond the Smithsonian, which is based in Washington, D.C.

President Trump has plunged once more into the nation’s cultural wars — this time with Washington’s famous Smithsonian Institution in his sights. As is often the case, the manner of Trump’s attack risks significant blowback,