I don't really care about the philosophising; but what I do know is the conditions in these jails are very bad, and you are not guaranteed safety inside of them. Now if they were a place that only "bad people" go to, well too bad for them.
But what we see over and over are totally innocent people getting caught up by police incompetence and being subjected to these jails. People love to say "it's the system!" as an excuse for bad people being bad, yes that is true. But that doesn't mean that there isn't a problem with the system. And you can't say it is the .1% when we see these stories constantly, nor that it is right purely because it affects so little. In the past the philosophy was rightly - "It is better to let 100 guilty men free than have 1 innocent man punished". Now we have no philosophy if you get caught up in the system too bad for you.
What system? the Pre-Trial Detention system; picture you are going about your day innocently. Then the police come visit you, say you caused an accident, injured someone (a child?) and fled. They point to a dent on your car that has been there for months and can prove it with home CCTV.
They don't care and haul you off to jail. Now you are being booked in, stripped naked, photographed, all of that. You can argue with a judge your innocence but when will you see one? It is Friday night so you have a long weekend to look forward to! You get into a cell and you must ask an inmate for a mat. They won't give you one. They read your paperwork and see it mentions injury to a child. Suddenly the freezing cold pod feels very hot. Do you have medical needs? good luck!
But luckily you make it safely until Monday and you get your bail set. $10,000 which you don't have but you can get a bondsman to get you out. Who will keep that $1000 fee regardless. But lucky you sort it out and can get back to work, telling them you missed work because you were in jail, but were innocent man! trust me! You feel lucky because there were many guys in that pod who had been in there for weeks because they couldn't get that money.
So the case gets dropped and you are found innocent. No big deal right you were found innocent so why are you complaining, the justice system works!
People say it like it is no big deal but being arrested and taken to jail is far far too casual an affair IMO in the USA. Especially for first timers! Surely there is a better way ?