The rapper, who earned seven nominations for this year's ceremony, recruited U2's Bono and The Edge for a bold, politically charged "XXX" collaboration, making a much-needed statement as he stood amidst a cadre of male dancers dressed in military attire and an American flag waving in the background.
The attempt at humor wasn't a hit with everyone: President Trump's ambassador to the United Nations, Nikki Haley, tweeted that the skit ruined the show for her.
And still, after all the hoopla about this being the year of hip-hop and political commentary, an old-fashioned song-and-dance man took home the lion's share of the awards, with Mars winning best album, record, and song, giving insight into a membership that is changing, but certainly still holds some traditional musical values.
Even Sting's performance of his 1987 song "Englishman in NY", seemed a bit more on the nose as the country deals with reforming immigration laws.
Hip-hop superstar Jay-Z entered the night with a field-leading eight nominations, including for Album, Record and Song of the Year.
Musicians and celebrities are expected to wear white roses to the event to honour the #METOO movement. "And to those who would dare try to silence us, we say, 'Time's up.'". It's not just going on in Washington. All were on the bill for the Las Vegas show in October that was torn apart by a mass shooter.
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While the intentions of the Homelessness Reduction Act are good, it can not fix this crisis. It does not include people in hostels or shelters or formal temporary accommodation.
Kesha performs "Praying" at the 60th annual Grammy Awards at Madison Square Garden, Jan. 28, 2018, in NY.
But for the awards, the feel-good Mars carried the night. The moment was genuine, angelic and exultant, blowing away virtually every other performance of the night.
Before the performance, Maren Morris, Eric Church and Brothers Osborne performed an emotional rendition of Eric Clapton's "Tears In Heaven" - written after his son died - in honor of the 58 people who died at the Route 91 Harvest Festival in Las Vegas a year ago.
Backstage, the Bennetts said they have always been a family affair.
The Grammys were also a clear example of rock "n" roll's decline as a creative force. He dedicated his win to songwriters who have made history in R&B music, including Babyface, Teddy Riley, Jimmy Jam and Terry Lewis.
"I just wanted to encourage everyone to support real music and real artists because everyone deserves the same shot", Cara added.
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- Best pop vocal album: - "Divide", Ed Sheeran.
Chris Stapleton won three Grammys in country categories.
Kesha gave a passionate performance at the Grammy Awards with the help of powerful women behind her, including the Resistance Revival Chorus.
"Don't cut me off Grammys, please", said Mars from the stage while accepting the last award of the night.
Posthumous Grammys were awarded to actress Carrie Fisher, singer Leonard Cohen and engineer Tom Coyne, who worked on Mars' "24K Magic" album.
Also on the schedule, performances from Miley Cyrus and Elton John, Cardi B, and Bruno Mars with Cardi B; country singer Maren Morris with Eric Church and the Brothers Osborne in a tribute to victims of American gun violence, plus Cara, Rihanna, SZA and Julia Michaels.
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Mueller, a former FBI director, was appointed by Deputy Attorney General Rod Rosenstein in May to conduct the investigation. Grassley said Mueller "should be free to complete his work, and to follow the facts wherever they lead".