At their core, data tell stories. They reveal patterns, show changes over time, and confirm or challenge our theories. And in cities across the country, mayors, police chiefs, and other local leaders are turning to data to help them understand and address gun violence, one of the most persistent crises they face. Innovative, data-driven programs are showing encouraging results. To keep high school students on the right track, the city of Chicago scaled up a... (GunPolicy.org)