“Movement is key to dissipating negativity in community relations. Typically, dominant powers will attempt to ghettoize their opponents during periods of open conflict, in an attempt to better monitor and control them. We have found that these are the ideal conditions for the intensification of malignancy in conflict; hostilities are more likely to fester and grow when groups are constrained in one location. This is exactly what occurred during the independence struggle in Algeria in the 1950s and 1960s, when the French limited the movement of non-French Algerians to the Kasbah. This constraint led to the festering of resentments and the organization of insurgents. Alternatively, systems where negativity is relatively unconstrained, and where members of groups are allowed to travel and disperse, will tend to show a dissipation of negativity over time. This is a counterintuitive finding with substantial implications for policy and practice.”