People share millions of photos and videos on Facebook every day, creating some of the most compelling and creative visuals on our platform. Some of that content is manipulated, often for benign reasons, like making a video sharper or audio more clear. But there are people who engage in media manipulation in order to mislead. Manipulations can be made through simple technology like Photoshop or through sophisticated tools that use artificial intelligence or "deep learning" techniques to create videos that distort reality – usually called "deepfakes." While these videos are still rare on the internet, they present a significant challenge for our industry and society as their use increases.