Outlaw biker violence and retaliation

Area of Science:

• Criminology
• Sociology
• Law Enforcement

Background:

• Global rise in outlaw biker populations contrasts with limited research on their violent behavior.
• Existing studies often overlook the micro-level interactions driving inter-group violence.

Purpose of the Study:

• To investigate the causal link between street gang violence and outlaw biker violence.
• To determine if outlaw biker violence is retaliatory and club-sanctioned.

Main Methods:

• Analysis of unique data on violent clashes between outlaw bikers and street gangs in Copenhagen (mid-2008 to early 2012).
• Statistical modeling to assess the association between violence committed by both groups.
• Sample included 640 individuals and 143 violent events involving 196 outlaw bikers.

Main Results:

• Violence perpetrated by street gang members was found to statistically predict violence committed by outlaw bikers.
• Findings suggest outlaw biker violence is, in part, a retaliatory response on behalf of their motorcycle club.

Conclusions:

• Outlaw biker violence is influenced by inter-group dynamics and reciprocal violence.
• This research expands understanding of micro-level processes in group violence, including outlaw biker clubs.