As a Facebook moderator Chris Gray spent his days looking at horrendous images of self-harm, killing and the worst of human behaviour, with just a short period of training and an employee handbook to guide him. Viewing disturbing online content became a way of life for him. Years later, the psychological trauma of his job hit him like a ton of bricks and he was diagnosed with PTSD. In this eye-opening account, we follow his quest to hold the behemoth Facebook to account for his PTSD – a journey that would ultimately lead him to take legal action against one of the world's most powerful corporations. The Moderator is the story of the mental health fallout from this very new type of job and an exploration of one of the most important questions of the 21st century: when everybody has direct communication with everybody else in the world, what should people be allowed to share, when is it okay to silence them – and who decides?