During the 2019 Anti-Extradition Bill protests in Hong Kong, activists made extensive efforts to internationalize their movement, engaging in public diplomacy and lobbying foreign governments to support their cause. The Hong Kong pro-democracy lobby—a loose coalition of individuals and organizations aiming to steer Western foreign policy in a direction they believe will benefit Hong Kong’s democratic prospects—emerged amidst this unprecedented grassroots mobilization. Four years on, however, the Hong Kong lobby is facing an uncertain future. Activists are striving to overcome the barriers posed by transnational repression and reinvent their image in today’s fraught geopolitical landscape. Two factors explain the success of Hong Kong activists in constructing and consolidating their lobbying infrastructure in 2019. First, the expansion and transformation of the …