MSNBC's Mika Brzezinski on Wednesday said President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE should have apologized after his tweet Tuesday going after Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.).

“The president should have taken it down. The president should have apologized if he didn’t take it down," Brzezinski said on "Morning Joe."

"He should have apologized for hurting Sen. Kirsten Gillibrand’s feelings, at the very least. But he should have apologized for being a sexist pig, for sexually harassing on Twitter, for using sex to denigrate women.”

Brzezinski continued to tear into Trump, saying Trump is "obsessed" with women.

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"Especially some women, especially women who go on television and have a voice, or especially women who serve in Congress or in the Senate who use their voices," she said.

"Any woman that stands up against him, he is obsessed with. He has some special problem with women."

Her comment comes after Trump on Tuesday tweeted that Gillibrand would "do anything" for campaign contributions.

"Lightweight Senator Kirsten Gillibrand, a total flunky for Chuck Schumer Chuck SchumerSenate Democrats introduce legislation to probe politicization of pandemic response Schumer interrupted during live briefing by heckler: 'Stop lying to the people' Jacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee MORE and someone who would come to my office “begging” for campaign contributions not so long ago (and would do anything for them), is now in the ring fighting against Trump. Very disloyal to Bill & Crooked-USED!" he tweeted.

White House press secretary Sarah Huckabee Sanders on Tuesday defended Trump, denying that he had launched a sexist attack.

“There is no way that is sexist at all,” she told reporters.

Instead, she said the president was accusing Gillibrand of being “controlled by contributions” and hammering home his pledge to “drain the swamp” in Washington.