Crime, Law and Justice

Minnesota-made tool tracks the how and why behind mass shootings

All but 2 percent of mass shooters were men, according to national database

Researchers James Densley and Jillian Peterson stand for a portrait
Researchers James Densley and Jillian Peterson stand for a portrait at Hamline University in St. Paul on March 19, 2019. Densey and Peterson are co-founders of The Violence Project, a research and training organization with the mission of reducing violence in society.
Evan Frost | MPR News file