"Vice President Joe Biden introduced Lady Gaga's original song-nominated performance at the Oscars with an exhortation that people step up and put an end to sexual assault.
Calling himself "the least qualified man here," Biden encouraged the audience to help change the culture by intervening in situations where consent has not or cannot be given.
The vice president then introduced Lady Gaga, who sang and played piano on"Til It Happens to You," a song she co-wrote for "The Hunting Ground.""