you are clearly undereducated.  The largest prisoner strike in world history has been going on since Sept 2016 right here in the US - and seen solidarity worldwide - and has been actively censored by our Gov and the media as a national embarrassment.  The US has the largest prisoner population on the planet, harvesting citizens and abusing them as slave labor for a 1/2 trillion $ yr 'for profit' prison labor industry for Corporations. Which FUNDAMENTALLY steals jobs from the citizens outside.  

It is modern day slavery, period.   
Over 2.4 million US Citizen are behind bars, when +80% are nonviolent?
Forced slave labor for the profit of Corporation is not "correctional" in any manner, it is abusive and would disgust any reasonable person.  

http://www.maskmagazine.com/the-prisoner-issue/struggle/live-updates-prisoner-strike

https://popularresistance.org/identifying-businesses-that-profit-from-prison-labor/

http://returntonow.net/2016/06/13/prison-labor-is-the-new-american-slavery/