A host of celebrities including Jennifer Aniston, Julianne Moore, Sofia Vergara, Spike Lee and President Barack Obama have appeared in a video for Everytown for Gun Safety alongside gun violence survivors titled We Can End Gun Violence, released just ahead of the three year anniversary of the Sandy Hook shooting and almost a week after the San Bernardino massacre.

Americans are invited to add their own messages making 'personal commitments' to end gun violence at www.WeCanEndGunViolence.org. Other celebrities involved include Amy Schumer, Nathan Lane, Adam Scott, Laura Linney, Ed O'Neill, Ty Burrell, Kevin Bacon, Sarah Silverman, Michael J Fox, Perez Hilton, Nick Offerman, Megan Mullally, Melissa Joan Hart, Olivia Munn and Debra Messing.