the United States has much higher rates of incarceration than any other country with similar or relatively similar political systems and socio-economic conditions.’  In your research did the authors elaborate as to why this is so?   Your post also stated, ‘many believe that prisoners had more rights before 1970s than after.’  Again, what is the basis for this conclusion, 

These are the two references

Berger, D. (2013). Social Movements and Mass Incarceration: What is To Be Done? 1. Souls, 15(1-2), 3-18.

Cloud, D. H., Drucker, E., Browne, A., & Parsons, J. (2015). Public health and solitary confinement in the United States. American journal of public health, 105(1), 18-26.