This isn't casual reading: https://www.hrw.org/reports/2001/prison/voices.html Apparently in some states the ones running the prisons don't seem to really care. "They're just getting what they deserve," is the attitude many have towards the prisoners. There is even one account in there of guards putting a prisoner with another cellmate whom they knew had raped multiple cellmates before to punish him.
no doubt some of these incidents lead to prisoner suicides: https://www.google.com/search?q=pri.....69i57j0l5.5331j0j7&sourceid=chrome&ie=UTF-8