The future of the open web is in crisis. Hate speech, fake news and social bots are dominating the debate. Civil liberties are under threat. How are tech companies proactively thinking about these issues? What are the opportunities and limitations to technology-based approaches like Fact Check, Conversation AI and Perspective? What responsibility do platforms versus traditional media organizations hold, and how can we strike the right balance between defending free expression while respecting local laws and cultural nuances?