The US does have a problem, we have high incarceration rates.  But the people in jail mostly deserve to be there.  Many are violent animals that can't be fixed.  The question is why does the US have such a violent culture and can something be done with the lower end of our society that can't seem to control themselves.  Letting people out of prison makes no sense.  It would be like saying we can't get kids to graduate high school so we'll just give a diploma to everyone which fixes the problem.