But... there's nothing in the article that suggests that they were treated particularly poorly. He was called "big bang theory", the basketball hoops were different heights, letters were opened and pictures were confiscated, and somebody referred to people with mental health issues as "screws and schizos". That's it? That's your entire indictment of the unfair treatment of people who actually did do horrible things to other people? Sure, there's room for improvement, but... not really that much room.
However, the horrors of the American prison system are pretty well documented, and I'm not sure it's really controversial to say that these are very bad places to find oneself, significantly worse than the prisons of many other western developed nations, and a much larger percentage of America's population is in prison than any other democratic nation.
besides, a misdemeanor & driving w/ a suspended license hardly confirms that "horrible things" have been done to other people. I'm sure even the most casual observer of the US has some awareness of the vast numbers in jail for non-violent drug offenses.
quite aside from the above, even the assumption that committing a crime is what's put an inmate inside is off the mark: https://csgjusticecenter.org/publications/confined-costly/
I just think that 'prisons' should become whatever sort of institution is best at rehabilitating criminals while still minimizing the amount of harm they can do to society during the rehabilitation process.
The character of individual prison guards is hardly the major factor here. It's not some statistical anomaly that American prisons are such awful, expensive, ineffective, and cruel places.
What's wrong is institutional and requires political action.
The idea that it's okay to horribly mistreat prisoners because they're 'bad people' is ghastly and outdated. The purpose of prisons should be to keep dangerous people away from regular people, and to rehabilitate the people capable of rehabilitation, not to punish 'bad people' because it makes us feel good.