From what I read on liberal web forums, many libs really believe the white supremacist government causes blacks to commit crimes. Imprisoning them makes money for the prison system. I've read that nonsense on numerous lib web forums.
How the gov. makes young, black males carjack, rob businesses, and beat innocent people is not explained.
How they make them not stay in school or study is not explained, either.
There are some problems with prison labor though. Not in government prisons, more in private-run prisons.