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A White House sponsored campaign to put an end to sexual assault received additional celebrity support Tuesday, as John Cho, Nina Dobrev, Haim, Josh Hutcherson, Minka Kelly, Matt McGorry, Jesse Metcalfe, Zoe Saldana and Jessica Szohr each appeared in a powerful PSA that focuses on sex and consent.

"If you don't get it," Saldanda said of consent, "you don't get it."

And sex without it? "It's rape," Hutcherson said.

The "It's On Us" campaign aims to help men women recognize that non-consensual sex is sexual assault; identify situations in which sexual assault may occur; intervene in situations where consent has not or cannot be given; and create an environment in which sexual assault is unacceptable and survivors are supported.

The White House partnered with dozens of colleges, companies and media outlets to spread the word. At the end of the video, Saldana and Hutcherson asked people to pledge their support for the campaign. Supporters include EA, GLAAD, NCAA, Planned Parenthood, RAINN, Snapchat, Tumblr and USA, among many others.

Last year's inaugural "It's on Us" PSA featured Lance Bass, Mayim Bialik, Connie Britton, Rose Byrne, Common, Gina Gershon, Jon Hamm, Randy Jackson, Kevin Love, Joel McHale, Olivia Munn, Questlove, Darby Stanchfield and Kerry Washington, plus Vice President Joe Biden and President Barack Obama.

(E! and USA are both members of the NBCUniversal family.)