Overpopulation leads to two other ecological problems, lack of resources, and pollution. Overpopulation, lack of resources and pollution result in economic and life style problems. The pursuit of happiness becomes difficult. Economic difficulties in an Agricultural Era mind pattern lead to ethnic troubles. Ethnic or religious groups traditionally repressed are repressed more.
Ethnic problems lead to violence.
The extreme First Wave form is ethnic cleansing. War is also a common result. There is still an imbalance of wealth between the old colonial imperialist powers and their former colonies, between Western Civilization and the older six, between Second and First Wave nations. Correction of this imbalance could be considered justice. AIDs adds another factor.