Trevin Brownie had to sift through lots of disturbing content for the three years he worked as an online content moderator in Nairobi, Kenya. We take off any form of abusive content that violates policies such as bullying and harassment or hate speech or violent graphic content suicides," Brownie [said]. Brownie has encountered content ranging from child pornography, material circulated by organized crime groups and terrorists, and images taken from war zones. "I've seen more than 500 beheadings on a monthly basis," he said. Brownie moved from South Africa, where he previously worked at a call center, to Nairobi, where he worked as a subcontractor for Facebook's main moderation hub in East Africa, which was operated by a U.S.-based company called Sama AI. Content moderators working in Kenya say Sama AI and other third-party outsourcing companies took advantage of them. They allege they received low-paying wages and inadequate mental health support compared to their counterparts overseas. Brownie says ... PTSD has become a common side effect he and others in this industry now live with, he said. "It's really traumatic. Disturbing, especially for the suicide videos," he said. A key obstacle to getting better protections for content moderators lies in how people think social media platforms work. More than 150 content moderators who work with the artificial intelligence (AI) systems used by Facebook, TikTok and ChatGPT, from all parts of the continent, gathered in Kenya to form the African Content Moderator's Union. The union is calling on companies in the industry to increase salaries, provide access to onsite psychiatrists, and a redrawing of policies to protect employees from exploitative labour practices.