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Twitter’s official hashtag was #inauguration. The microblogging service set up an Event page to monitor tweets about the occasion.

According to Twitter, there were 1.1 million tweets sent during the ceremony, which lasted just over an hour, referencing the inauguration, with the peek moment for tweets following the moment Obama said: "We cannot mistake absolutism for principle, or substitute spectacle for politics, or treat name-calling as reasoned debate."

Some of those tweets were clearly coming from the risers set up for VIPs at the Capitol. Many members of Congress tweeted comments and photos during the ceremony.

Sen. Patty MurrayPatricia (Patty) Lynn MurrayCDC director to miss fourth hearing because of potential ethics issues Week ahead: Lawmakers near deal on children's health funding Ryan suggests room for bipartisanship on ObamaCare MORE (D-Wash.) and Rep. Gwen MooreGwen Sophia MoorePelosi rips Trump administration's 'thought control' on CDC Dem: Trump banning words in CDC documents ‘deeply disturbing and offensive’ Dem rep: Moore supporter called my office pretending to be a reporter, shouted racial slurs MORE (D-Wis.) both tweeted their view of the president.


Sen. Claire McCaskillClaire Conner McCaskillNSA spying program overcomes key Senate hurdle Senate campaign fundraising reports roll in Dems search for winning playbook MORE (D-Mo.) mocked Supreme Court Justice Antonin Scalia’s “weird” hat, Sen. Mike CrapoMichael (Mike) Dean CrapoTrump calls for looser rules for bank loans in Dodd-Frank overhaul Week ahead: Lawmakers eye another short-term spending bill Overnight Finance: Trump promises farmers 'better deal' on NAFTA | Clock ticks to shutdown deadline | Dems worry Trump pressuring IRS on withholdings | SEC halts trading in digital currency firm MORE (R-Idaho) complimented the Marine Corps Band and Rep. Glenn Thompson (R-Pa.) snapped a photo of Beyoncé while the singer delivered the closing rendition of the National Anthem.

Clarkson, who sang “My country, ‘tis of thee” during the ceremony, tweeted her relief after finishing the song, and Michelle ObamaMichelle LeVaughn Robinson ObamaCriticism of Melania Trump shows a lot about the #MeToo movement Obama tells Letterman of showing off his 'dad moves' in front of Prince Smithsonian to unveil Obamas' portraits next month MORE personally tweeted that she felt “honored and blessed” that so many Americans attended the ceremony.




Commenting on the chilly weather in Washington, D.C., was actress Gabrielle Union — who also said it was “worth it” to be a “frozen fudge pop” — and Longoria, part of the inaugural committee, tweeted a photo of herself — also looking bundled up from the cold — on the platform.


The White House encouraged Twitter followers to share favorite quotes from Obama’s inauguration speech using the hashtag #inaugquote, but the hashtag never really got going, according to Topsy analytics.


The Presidential Inaugural Committee went on to live-tweet the parade following the swearing-in ceremony on Monday afternoon from @obamainaugural, while the Secret Service continued sharing updated security information about barricades and long lines at @secretservice.