It is a story that is gripping Germany and has led to one of its best known TV stars tearfully telling thousands of protesters from a stage in Hamburg how she had to wear a bulletproof vest, due to death threats. A week ago Collien Fernandes, 44, accused her ex-husband of spreading pornographic deepfakes of her online, in bombshell allegations published by German news magazine Der Spiegel. Her claims have triggered demonstrations, promises to tighten the law and criticism that Chancellor Friedrich Merz has bungled his response. Fernandes' ex-husband, Christian Ulmen, denies the allegations and has not been charged. He is also taking legal action against the magazine that broke the story. His high-profile media lawyers, Christian Schertz and Simon Bergmann, have told the BBC that Ulmen has never "produced and/or distributed deepfake videos of Ms Fernandes or any other individuals. Any such claims are false".…