This work looks at the dynamics between the population of neutral citizens and several other undesirable population, notably populations of drug users, gangs and violent police. As these undesirable populations grow, the system sees a decline in the stability of the neutral population. The more growth in the undesirable populations, the more unstable is the neutral population. This instability can be seen in the neutral population being in constant and growing fear from the undesirable populations.

Ce travail examine la dynamique entre la population de citoyens neutres et plusieurs autres populations indésirables, notamment les populations de toxicomanes, de gangs et de policiers violents. À mesure que ces populations indésirables augmentent, le système constate un déclin de la stabilité de la population neutre. Plus la croissance des populations indésirables est importante, plus la population neutre est instable. Cette instabilité se traduit par une peur constante et croissante de la part des populations indésirables.