Joe Biden and Lady Gaga just made an incredibly powerful statement about sexual assault.

Biden came on to a standing ovation to introduce Lady Gaga’s performance of her Best Song nominee, “’Til It Happens To You,” and put the responsibility for preventing sexual assault on college campuses squarely on everyone watching. He asked the audience—in the Dolby Theater and on television screens across America—to take a pledge: “I will intervene in situations when consent has not or cannot be given,” so that victims of sexual assault, male or female, never have to ask themselves, “‘What did I do?’ They did nothing wrong.”

Lady Gaga followed the vice president’s plea with a passionate performance of “Til It Happens To You” from The Hunting Ground, a documentary about rape on college campuses. Rape survivors with words like “It happened to me” and “Survivor” written on their arms came on stage as she sang out the lyrics, “Till it happens to you, you won’t know how it feels.”