The only real success for such a theory to work in actual practice is within a relatively enlightened and educated populace. And, I would argue, a citizenry comprised mostly of like-minded, similarly circumstanced, and homogenous people. Unfortunately, of course, the very people who are likely to perceive themselves as being disadvantaged or even oppressed are also more likely to be less educated and have more of a victim mentality. It's a cycle, and it seems unlikely that the theory would work anywhere--probably because it's not all that realistic a theory, in practice.
The concept of peacemaking criminology is a nonviolent approach and movement against oppression and social injustices. It is a criminological theory that tries to explain reasons for criminal behavior. Proponents of peacemaking criminology state that crime arises from inequalities in social structures like education, employment, housing, access to governmental programs, and others.
A basic tenet is that our society puts certain groups at a disadvantage due to the design of the system. This design flaw breeds anger and resentment from individuals that feel they are the victims of unequal opportunities. Peacemaking criminology attempts to address these inequalities.
It may work well in some communities that are open minded, and in those who have resources to identify social ills and the budgets to circumvent those ills. Critics of the theory suggest that regardless of the effort there will always remain perceived inequalities by some segments of the population.