PETA, in partnership with advertising agency Grey London, is exposing the carnage behind the Christmas cheer with a bold new campaign, 'Happy Christmassacre', urging people to go vegan this festive season. At the heart of the campaign is a bold creative idea that hijacks the familiar warmth of Christmas and turns it into something disturbingly revealing. The hero film, a darkly comic two minute spot directed by Emmy and Cannes Lions winning director David Shane at O Positive, opens on the quintessential Christmas dinner scene before transforming into a horror-inspired depiction of the hidden violence behind the feast.