James Blake investigates whether social media is promoting harmful content, joining Cheshire Police's consent campaign against online risk and talking to Dr Kaitlyn Regehr, who explains how her research suggests one social media algorithm can quadruple misogynistic content in a week. He learns how it's easier to get a clip removed for copyrighted music than it is to get child abuse content taken down and realises the full extent of reports of harmful content on social media with the help of NCA officers