What we know, and what we need to know, about gun violence

A lack of research can be lethal. But policy makers aren't entirely in the dark.

from nicholemhearn digest http://www.chicagobusiness.com/article/20180504/OPINION/180509908/what-we-know-and-what-we-need-to-know-about-gun-violence?utm_source=OPINION&utm_medium=rss&utm_campaign=chicagobusiness