Should the government hire private companies to run prisons?

Private prisons are incarceration centers that are run by a for-profit company instead of a government agency. The companies that operate private prisons are paid a per-diem or monthly rate for each prisoner they keep in their facilities. In Brazil prisoners are selected for private prisons on the basis of positive prior behavior and lack of connections with criminal factions in order to avoid faction-generated violence. Opponents of private prisons argue that incarceration is a social responsibility and that entrusting it to for-profit companies is inhumane. Proponents argue that prisons run by private companies are consistently more cost effective than those run by government agencies.