Brazil’s Federal Public Ministry (MPF), the country’s body of federal prosecutors, has issued a formal recommendation for ByteDance’s TikTok to immediately remove 108 posts and three user profiles advertising metallic mercury, a chemical central to illegal gold mining operations in the Amazon rainforest. The recommendation is a direct regulatory action against a major foreign social media platform, demanding it shut down a direct pipeline for a substance that causes profound environmental and human health crises in the region. The content identified by prosecutors, which explicitly targeted the Brazilian audience with terms like “Garimpo Owner” and offered high-purity mercury for sale, had already accumulated more than 5.8 million views, underscoring the scale of the illegal market operating on the platform.