Celebrities are speaking out against gun violence.

By George Stark
December 10, 2015 12:30 AM
razer Harrison/Getty Images; Ilya S. Savenok/Getty Images

Celebrities are speaking out against gun violence.

Jennifer Aniston, Amy Schumer, Sofia Vergara and Julianne Moore have joined President Obama in a PSA called ‘We Can End Gun Violence’ following the San Bernardino shooting last week that killed 14 and injured 21.

Also joining them in the powerful video are Kevin Bacon, Michael J. Fox, Olivia Munn, Sarah Silverman, Nathan Lane and Debra Messing.

The PSA also has a site where you are encouraged to add your voice to the video.

Since the mass shootings in San Bernardino, California on Dec. 2, PEOPLE reposted our Call to Action on Gun Violence that was published in our Oct. 19 issue after the mass shooting at Umpqua Community College in Roseburg, Oregon.

The article contains contact information for all 535 voting members of the House and Senate. We urge readers to contact their elected representatives to make their voices heard.