Privatized incarceration facilities with incentives to keep people locked up, and influencing the CJ system to maintain profits is also an issue. There are numerous cases of businesses doing shady things to pocket more money.
It is possible to be outraged by all these things at the same time. No one has to pick between different types of exploitation and only be mad at one thing.
I agree in principle. However, as a piece of empirical evidence, you can peruse the comments in this HN post. Compare comments that express outrage for child labor and outrage for forced prison labor. Some HN readers are clearly picking to not be outraged at the latter.
It is possible to be outraged by all these things at the same time. No one has to pick between different types of exploitation and only be mad at one thing.