Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/25927 
Year of Publication: 
2006
Series/Report no.: 
CESifo Working Paper No. 1882
Publisher: 
Center for Economic Studies and ifo Institute (CESifo), Munich
Abstract: 
This paper isolates the causal effect of policing on group violence, using unique panel data on self-reported crime by soccer and ice hockey hooligans. The problem of reverse causality from violence to policing is solved by two drastic reallocations of the Stockholm Supporter Police unit to other activities following the 9/11 terrorist attack in September 2001 and the Tsunami catastrophe in December 2004. Difference-in-difference analysis reveals that Stockholm-related hooligan violence increased dramatically during these periods.
JEL: 
K10
K42
Document Type: 
Working Paper
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