The system was designed to turn victim against victim, as the prisoner functionaries were pitted against their fellow prisoners in order to maintain the favor of their SS overseers. If they were derelict, they would be returned to the status of ordinary prisoners and be subject to other kapos. Many prisoner functionaries were recruited from the ranks of violent criminal gangs rather than from the more numerous political, religious, and racial prisoners; such criminal convicts were known for their brutality toward other prisoners.