Extremism is deadliest motive for U.S. mass shootings

Mass shootings by extremists have killed more Americans than any other motive in the past 25 years. There is almost no overlap between extremist and psychotic mass shooters. Extremists are 57% deadlier per incident compared to psychotic shooters.

Mass shootings by extremists have killed more Americans than any other motive in the past 25 years. There is practically no overlap between extremist and psychotic mass shooters. Extremists are 57% deadlier per incident compared to psychotic shooters.