The COVID-19 pandemic has exposed an interconnected and tightly coupled globalized
world in rapid change. This article sets the scientific stage for understanding and responding …

How do the Internet and social media affect political outcomes? We review empirical
evidence from the recent political economy literature, focusing primarily on work that …

We evaluate the empirical evidence interrogating the question of whether social media
erodes social cohesion. We look at how networks, information exchange, and norms operate …

This paper studies information diffusion in social media and the potential role of bots in
influencing public opinions. Using Twitter data on the 2016 EU Referendum (“Brexit”) and …

Do new communication technologies, such as social media, alleviate the collective action
problem? This paper provides evidence that penetration of VK, the dominant Russian online …

Protest event analysis is an important method for the study of collective action and social
movements and typically draws on traditional media reports as the data source. We …

Who is responsible for protest mobilization? Models of disease and information diffusion
suggest that those central to a social network (the core) should have a greater ability to …

Since the shooting of Black teenager Michael Brown by White police officer Darren Wilson in
Ferguson, Missouri, the protest hashtag# BlackLivesMatter has amplified critiques of …

We study the causal effect of social media on ethnic hate crimes and xenophobic attitudes in
Russia using quasi-exogenous variation in social media penetration across cities. Higher …

Social media data is widely analyzed in computational social science. Twitter, one of the
largest social media platforms, is used for research, journalism, business, and government …