Dr. Martin Luther King Jr. addressing crowd of demonstrators outside the Lincoln Memorial during the March on Washington for Jobs and Freedom. OpenAI halted artificial intelligence-generated videos of Martin Luther King Jr. after users utilized its short-form video tool Sora to create "disrespectful depictions" of the civil rights leader. "While there are strong free speech interests in depicting historical figures, OpenAI believes public figures and their families should ultimately have control over how their likeness is used," OpenAI said in a post to social media platform X. The ChatGPT maker said it will work to toughen "guardrails" for historical figures and that public figures or representatives can ask to not appear in Sora videos. OpenAI did not immediately respond to CNBC's request for comment.