This paper studies the origins and consequences of the Russian mafia (vory-v-zakone). Using a unique web scraped dataset containing detailed biographies of more than 5,000 mafia leaders, I first show that the Russian mafia originated in the Soviet Gulag archipelago, and could be found near the...

We know that when collective emotions are prolonged, it leads not only to action (which could be negative) but also to the formation of identity, culture, or an emotional climate. Therefore, policymakers must understand how collective emotions react to macro-level shocks to mitigate potentially...

In "The Missionary Roots of Liberal Democracy", Robert D. Woodberry (2012) claims that the emergence of stable democracies around the world was influenced by conversionary Protestantism. While Woodberry's historical analysis is exhaustive, the accompanying empirical evidence suffers from severe...

The COVID-19 pandemic is an example of an immense global failure to curb the spread of a pathogen and save lives. To indirectly protect people against a deadly virus, a population needs to achieve herd immunity, which is attained either through vaccination or prior infection. However, achieving...