Recent events have resulted in calls to ban large capacity magazines (LCMs) holding more than 10 rounds of ammunition. Using data from a Virginia data base of crime guns seized by police between 1993 and 2013, we find that the proportion of crime guns with LCMs declined after the 1994 Federal...

Using a unique new data set on police-involved homicides, we apply several discrimination tests to determine if white police officers discriminate against black suspects. We find that the probability of an unarmed black suspect being killed by a white police officer is not significantly greater...

Personal violence, has declined substantially in Europe from 1200-2010. The conventional wisdom is that the state’s monopoly on violence is the cause of this happy result. I find some evidence that does not support this hypothesis. I suggest an alternative hypothesis that could explain at...

Recent events have resulted in calls to ban large capacity magazines (LCMs) holding more than 10 rounds of ammunition. Using data from a Virginia data base of crime guns seized by police between 1993 and 2013, we find that the proportion of crime guns with LCMs declined after the 1994 Federal...

In an article published in 2011, Aneja, Donohue and Zhang found that shall-issue or right-to-carry (RTC) concealed weapons laws have no effect on any crime except for a positive effect on assault. This paper reports a replication of their basic findings and some corresponding robustness checks,...

“Shall-issue†laws require authorities to issue concealed-weapons permits to anyone who applies, unless the applicant has a criminal record or a history of mental illness. A large number of studies indicate that shall-issue laws reduce crime. Only one study, an influential paper in the...

In the September 2008 issue of this journal we criticized work by Ian Ayres and John Donohue on the relation between right-to-carry gun laws and crime rates. They replied in the January 2009 issue. Here we respond to their reply.