They bought 20 panda bears, with Ai explaining that “panda” is a term used in China to describe a member of the secret police. And they printed and shredded documents from the Snowden archive that have been published by newspapers. Then they destuffed the pandas, and restuffed them with the shredded documents as well as a micro SD card. “The pandas can self-replicate,” says Appelbaum. “We’ve restuffed them with data.”