evidence: A handful of similar-looking YouTube channels in August 2023 were promoting unsupported conspiracy theories about the death of former U.S. President Barack Obama's family's personal chef, Tafari Campbell, and the creators of the clips were doing it with voices generated by AI. [...] The video featured fake, AI-generated audio of the former president supposedly reacting to "allegations" that had been lodged by Sherise Campbell in regard to her husband's death. [...] His caption read, "Tafari Campbell showed us what true character looks like. He believed that actions speak louder than words. And he used his immense gifts to bring people together, provide comfort, and spread joy. I'll miss him every day."