What about taking a step back to really think about why the US has such an absurd (and the largest) number of people on lockup? [1][2]
Someone certainly stands to gain from it and it certainly isn't society at large, as you can easily grasp from the results on the "war on drugs"... [3]
[1] https://www.washingtonpost.com/news/fact-checker/wp/2015/07/... [2] https://en.wikipedia.org/wiki/Comparison_of_United_States_in... [3] https://en.wikipedia.org/wiki/War_on_Drugs#Arrests_and_incar...