The prison-industrial complex is when people and companies profit from putting people in prison. People and companies make money from things like building prisons, making uniforms for prisoners, and providing food for prisoners. They also benefit from longer sentences and laws and policies that make it easier to put people in prison. This means that the more people that are in prison, the more money these people and companies make. Some people think this isn't fair because it means people don't always get justice and that some people may get more severely punished than others for the same offenses.