Compassion in World Farming was founded over 40 years ago in 1967 by a British farmer who became horrified by the development of modern, intensive factory farming.
Clever chaps over at Elvis agency connected an enormous interactive billboard on Eat Street in Westfield shopping centre, London, to Wren Davis free-range farm in Buckinghamshire, allowing shoppers to use a live feed app to hurl 'apples' at the billboard and then watch an elaborate feeding machine catapult them to hungry pigs in real life over at the farm.
Vimeo link
(thanks Cora)