Dutch mayors play an increasingly prominent role in tackling (organized) crime. However, empirical research into how mayors fulfil this role remains scarce. Based on 23 interviews with nineteen mayors and sixteen municipal officials, this study reveals the different ways in which mayors have given meaning to the administrative approach of outlaw motorcycle gangs (OMCGs) in the period 2012-2017. While the national approach to OMCGs fits within the wider focus in society on prevention and the exclusion of ‘risky groups’, this empirical study shows how mayors give their own effect to this focus at the local level.

Although reward systems are utilized in prisons worldwide, evaluations regarding their intended use are lacking. This contribution reconstructs the policy theory of such a system: Promotion and Demotion, as implemented in Dutch prisons in 2014. With a policy scientific approach the intended target group, means, goals and causal mechanisms of the system were delineated. The policy theory assumes three means, ten goals and 24 causal mechanisms. The policy theory is insufficiently empirically substantiated on a number of points and takes limited account of (cognitively) impaired prisoners. This accurate reconstruction offers a unique insight into the assumed functioning of a part of Dutch detention policy and provides starting points for international considerations of behavioral change in detention.