This paper provides a county-level investigation of the root causes of gun violence in the U.S. To guide our empirical analysis, we develop a simple theoretical model which suggests that firearm-related offenses in a given county increase with the number of illegal guns and decrease with social...

There have been dozens of high-profile mass shootings in recent decades. This paper presents three main findings about the impact of mass shootings on gun policy. First, mass shootings evoke large policy responses. A single mass shooting leads to a 15% increase in the number of firearm bills...

This paper examines the US gun-related murder (GM) rate and places it in an international perspective. The data show that the US GM rate is 27 times the average rate for 22 other developed countries (ODC). Its gun ownership rate is 5.4 times that of ODC and the murder rate per gun is 5 times...