You can't do this sort of flamewar here, regardless of how strongly you feel about whichever countries. We ban accounts that do this, so please review https://news.ycombinator.com/newsguidelines.html and stick to the rules.
The U.S. has 22% of the worlds prisoners, despite only having 4% of the population, if you really wanna talk about prison.
US also has 22%+ of the worlds wealth. Prisons and justice systems are expensive.
At least the prisons aren't re-education camps to worship USA culture and the Federal Government. At least I can publicly talk about evil government abuse of its citizens, unlike Chinese people living under the CCP's shadow.