The Transatlantic High Level Working Group on Content Moderation Online and Freedom of Expression was formed to identify and encourage adoption of scalable solutions to reduce hate speech, violent extremism, and viral deception online, while protecting freedom of expression and a vibrant global internet. The TWG comprises 28 political leaders, lawyers, academics, representatives of civil society organizations and tech companies, journalists and think tanks from Europe and North America. We reviewed current legislative initiatives to extract best practices, and make concrete and actionable recommendations. The final report reflects views expressed during our discussions and charts a path forward. We did not seek unanimity on every conclusion or recommendation, recognizing that diverse perspectives could not always be reconciled.