Robust Nonprofits
This may seem like a very general statement that could potentially overlap with item 10, but the evidence in favor of a robust support policy for nonprofit organizations is entirely independent and fairly specific. It originates from a 2017 New York University study titled "Community and the Crime Decline," which contained information from 264 people between 1990 and 2013. According to research, murder decreased by about 0.9%, violent crime in general decreased by 0.6%, and property crime decreased by 0.4% in cities with a population of about 100,000.
There is evidence that nonprofit organizations are effective at assisting high-crime areas all around the world, even in the most terrifying settings. Consider the Colombian city of Medellin, where Pablo Escobar was born and which earned the moniker "Machine Gun City" due to its propensity for violence. According to a 2017 CNN story, the active library expansion and all the related community programs were altering the entire character of the area that seemed hopeless.