As your comment is marked 1 hour old, I see little grumbling about spending money on people who've broken the law (conversely, there are several comments speaking to the rationality of attempting to rehabilitate people who will be released).
I've changed "much" to "some" to weaken my claim re: how much disagreement about that is going on this thread. There is certainly some: https://news.ycombinator.com/item?id=9899924