Replication Data for: Civilian Behavior on Social Media During Civil War

Recent research emphasizes social media's potential for citizens to express shared grievances. In active conflict, however, social media posts indicating political loyalties can pose severe risks to civilians. We develop a theory that explains how civilians modify their online behavior as part of efforts to improve their security during conflict. After major changes in territorial control, civilians should be more likely to post positive content, and more content that supports the winning side. We study social media behavior during and after the siege of Aleppo in November 2016. We match Aleppo-based Twitter users with users from other parts of Syria and use large language models to analyze changes in online behavior after the regime's retaking of the city. Results show that users in Aleppo post more positive and pro-Assad content, but only when self-disclosing their location. The findings have important implications for our understanding of digital communication in civil conflict.