Hollywood stars say 'enough' to gun violence in US

Hollywood's A-list has banded together in a new video campaigning against gun violence in the US.

Approximately 50-high profile celebrities including Beyonce, Selena Gomez, Jennifer Aniston, Michelle Williams, Steve Carell, Reese Witherspoon, Jennifer Garner, Gwyneth Paltrow, Cameron Diaz, Mad Men's star Jon Hamm, Will Ferrell and Jason Bateman have joined forces in the powerful public service announcement demanding a plan to end gun-related atrocities just one week after the Sandy Hook shootings.