Mass shooters have four things in common, new study finds

Name: Mass shooters have four things in common, new study finds
Uploaded: 2019-11-22T15:01:36Z
Duration: 4 min 21 s
Description: The Violence Project has revealed the results of a sweeping new study of 171 mass shooters from the past 50 years.

The Violence Project has revealed the results of a sweeping new study of 171 mass shooters from the past 50 years.