In a new Public Service Announcement, celebrities including Jennifer Aniston, Beyonce, Michelle Williams and Gwyneth Paltrow urge the American people to demand a plan to end gun violence.

“Demand a Plan,” they urge their fellow American citizens. “As an American, as a human being, for the children of Sandy Hook.

“It’s time for our leaders to act.”

AMEN! Count me in. By the way, this is a really cool story called Love, Not Violence After Newtown!

The black-and-white PSA video starts with the celebs recalling mass shootings including Columbine in 1999, Virginia Tech in 2007 and Aurora earlier this year, all leading to the bloodbath at Sandy Hook elementary school in Newtown.

Joining the celebs above are Olivia Munn, Selena Gomez, Reese Witherspoon, Paul Rudd, Will Ferrell, Ellen DeGeneres, Jon Hamm, Adam Scott, Sarah Silverman, Julianne Moore, Chris Rock, Jamie Foxx, Jennifer Westfeldt, Amy Poehler, Rashida Jones, Kate Hudson, Cameron Diaz, John Slattery, Jeremy Renner, Conan O’Brien, and more.

“How many more?” They ask, “How many more colleges? How many more classrooms? How many more movie theaters? How many more houses of faith?”

Watch the PSA in the video clip below (and sign the Demand A Plan petition here):