House Speaker Nancy Pelosi Nancy PelosiTrump puts Supreme Court fight at center of Ohio rally CDC causes new storm by pulling coronavirus guidance Overnight Health Care: CDC pulls revised guidance on coronavirus | Government watchdog finds supply shortages are harming US response | As virus pummels US, Europe sees its own spike MORE’s (D-Calif.) emphatic applause in response to President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE calling for an end to “revenge politics” quickly became one of the more memorable images of Tuesday's State of the Union address.

Pelosi, clad in all white and seated behind Trump, was stoic for most of the speech, making her burst of applause all the more noteworthy.

Trump turned back to face Pelosi right as she clapped with outstretched arms.

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The image of Pelosi, with her eyebrows raised and looking directly at Trump, became an internet sensation.

When I tell my wife I changed a diaper. pic.twitter.com/N2ncXAuUb2 — Mikel Jollett (@Mikel_Jollett) February 5, 2019

A photo that speaks a million words, by the artist @dougmillsnyt pic.twitter.com/DlW5WWxMRC — Vivian Salama (@vmsalama) February 5, 2019

Pelosi applauded and joined in several standing ovations, including ones for war veterans who were recognized by Trump during his more than hourlong speech.

At other times, Pelosi could be seen motioning for Democrats to quiet down, like when they groaned at some of Trump's remarks regarding migrants.

Pelosi has proved to be an effective Democratic counterweight to Trump since Democrats won back the House in November. She and other Democratic leaders recently refused to meet Trump's demand for more than $5 billion in funding for a proposed wall along the U.S.-Mexico border, leading a standoff that resulted in a 35-day partial government shutdown that ended Jan. 25.

After the government fully reopened without any wall funding, many commentators on both sides of the aisle said Pelosi emerged as the victor in the shutdown showdown.