This document summarizes a presentation given by Prof Chris Marsden on responsible content moderation and the law. It discusses issues around disinformation, including defining it. It analyzes different regulatory options for addressing disinformation, from self-regulation to statutory regulation. It provides recommendations, including that governments should avoid internet shutdowns in response to disinformation alone. It discusses the Christchurch Call agreement signed by many countries to address terrorist and violent extremist content online, including a focus on understanding recommendation algorithms. Former PM Jacinda Ardern of New Zealand now promotes the Christchurch Call as a special envoy.