Most important measures for reducing crime in the US + criminal justice reform
I hear crime rates are generally decreasing in most of the US but obviously crime is still rampant and the criminal justice system is plagued with problems of efficacy, efficiency, quality and legitimacy.
What are the most important reasons for the general downward trend in crime rates?
What are the most effective measures that can be taken to reduce crime rates further?
What are the most urgent problems with the criminal justice system that need fixing and that can be fixed within the coming decade?
If you could implement one single change to the way the US works, for the purpose of preventing or reducing crime, what would you change?