The geography, incidence, and underreporting of gun violence: New evidence using ShotSpotter data (Jillian B. Carr, Jennifer L. Doleac, Brookings)

Criminal activity is often selectively underreported – that is, underreported in a non-random manner. This can make it difficult to understand public safety problems and devise effective policy strategies to address them.

http://www.brookings.edu/research/papers/2016/04/27-the-geography-incidence-and-underreporting-of-gun-violence-doleac