The reality of this myth, it’s driven by a need to keep our jails full and have a slave labor force. Yes, the inmates make and build for the federal gov’t, the military uniforms, road signs, lic. plates and much more. Private corrections stocks r traded on the NYSE. The feds contract w/them and some states do as well, it’s a profitable business. CP is based on emotions not an empiracle study, but it does serve the politician, he/she r hard on crime. After 31 yrs working at 6 diff. joints u learn about our system of injustice, at all levels. Good luck!