This is why 10 years after its creation, “Glass Walls” – which has been viewed more than 20 million times since its launch – is as relevant as ever. Because if slaughterhouses had glass walls, everyone would be vegan.

Paul and his first wife Linda realised that animals were sentient beings while living on a farm and watching all the farm animals. It struck them that animals had a life of their own and wanted to live just as much as humans do, they decided to go vegetarian. After forming his new band Wings, with Linda a band member, they displayed large banners on stage during their worldwide tours stating “Go  Veggie” – long before vegetarianism, let alone veganism was a decidedly odd lifestyle choice. This did not always endear them to their audience. But they persevered.

Linda wrote veggie cookbooks while the two spread the message of compassion. An original food pioneer, Linda McCartney believed in great tasting, honest, meat-free food and the shared pleasure that eating well could bring. She went on to found an empire that promoted cruelty-free food.

Join us in celebrating Sir Paul’s upcoming birthday by watching his video and sharing it with your friends and family to encourage them to go vegan. We can each spare the lives of nearly 200 animals a year by making the change – animals such as pigs, who enjoy listening to music, getting massages, and even playing video games, and cows, who develop deep bonds with their babies. They have the same desire and right to live as any of us.