In what may have been the most powerful moment of Oscar night, Vice President Joe Biden to the stage to introduce Lady Gaga.
While it's not typically for a politician to make an appearance at the Academy Awards, Biden came out and gave a thoughtful introduction to the pop star who sang her daring rendition of "Till It Happens To You", her Oscar-nominated song for the sexual assault documentary The Hunting Ground.
When Biden arrived, he received a standing ovation from the crowd. He then gave a moving speech calling for what he called a "change in the culture" of how people behave towards sexual assault.
See the whole moment below.