"Social media platforms are taking down “terrorist and violent extremist content” more and more quickly, often in response to the demands of governments, but in a way that prevents the content from being used to support investigations into serious crimes, including war crimes. “Video Unavailable”: Social Media Platforms Remove Evidence of War Crimes, examines the value of social media content in human rights investigations and the impacts that content takedowns are having for international and national investigators, civil society organizations, and the media. Human Rights Watch is calling for a broad consultative process with all relevant stakeholders, including social media companies, to develop a mechanism to preserve potential evidence of serious crimes that was posted publicly online and make it available to support national and international prosecutions, as well as investigations by civil society organizations, journalists and academics." (Back cover)